[Lee, Nate, and Thompson are walking through Gravity Falls and later stop at the Palace of Pranks.]
Lee: Well, dudes, here it is. The Palace of Pranks! The greatest novelty shop in Gravity Falls! All the greatest pranksters, including yours truly, shop here.
Nate: Where has this been all my life and how come you never told me about it?
Lee: Not my fault ya didn't ask, genius! Anyway, this place is where I got my gag peanut brittle can. [Takes out a can of peanut brittle]
Thompson: Oh, boy! Peanut Brittle! Gimme! [Takes the can to open it]
Nate: Dude, did you not hear what Lee just said? It's a booby trap.
Thompson: Nice try, Nate, but it's not gonna work on me. I'm gonna have me some of Lee's delicious Peanut Brittle! [Opens the can, but purple tubes come out of the can] Where's the Peanut Brittle?
Lee: [Laughs along with Nate] That gets funnier every time you say that, Thompson. C'mon, let's go inside. [Goes inside the store with Nate]
Thompson: [Starting to cry] Peanut Brittle?
[Lee and Nate enter the Palace of Pranks.]
Lee: [Smells the air while Thompson comes in] Ahh! Nothing compares to the smell of cheap plastic novelty items! Pranks, gags, and gross-out toys as far as the eye can see!
Nate: [Walks down the aisle with Lee] Again, would've been nice if you told me about this place, Lee.
Thompson: [In another aisle] Hey, Peanut Brittle! [Purple tubes pop out above the aisle Thompson is in] Oh, darn it! Not again!
Nate: [Laughs along with Lee] Dude, that's funnier the second time!
Frank: [Approaches the two teens] Good to see ya, Lee! How's my number one customer?
Lee: Great, Frank. This is my dude, Nate and this idiot is Thompson. They wanna be pranksters too.
Frank: [Walks up to Nate] Pleasure to meetcha, Nate. [Shakes Nate's hand, but Frank has a joy buzzer, which shocks Nate, making him scream a bit and sucks his hand while Frank laughs] That's your first lesson, son! The granddaddy of all pranks. The joy buzzer. The prank is for the enjoyment of the prankster.
Lee: Ya see, guys, Frank here is the master. I learned all I know about pranks from him. [Walks to the checkout counter with Nate and Thompson while Frank is behind the counter] Okay, Frank, whaddya got today?
Frank: Well, this came in just this morning. [Takes out a package of gum] Have some gum. [Hands Thompson a stick of gum]
Thompson: Thanks. [Chews the gum, but then screams, as his head explodes]
Frank: Ha! Exploding chewing gum! Only $9.95.
Thompson: [His head is gone, leaving a neck bone in the shape of a femur while his voice is muffled] I don't get it.
Nate: Question, Frank, what can I get for one dollar? [Takes out a dollar]
Frank: [Takes out a fake dollar] One dollar'll get you this fake gag dollar. Fool your friends into thinking you've got a real dollar.
Frank: [Takes out a whoopie cushion] A whoopie cushion?
Frank: [Takes out fake vomit] Fake vomit?
Frank: [Shows part of the counter covered in real vomit] Real vomit?
Lee and Nate: [Disgusted] Gross!
Lee: Don'tcha have anything good?
Frank: Weeell, there is one prank that I've been saving up for a real top of the line prankster. [Shows a spray can] Invisible Spray!
Lee: Wow, Invisible Spray!
Thompson: But I can still see it.
Nate: It's not invisible, idiot. It's just the name.
Lee: Just think of the pranks we could pull with this bad boy! [Buys the spray]
Frank: Good choice! Now be careful with that stuff, boys. It stains clothes.
Lee: Thanks, Frank! [Leaves the store with Nate and Thompson]
[Lee, Nate, and Thompson are now outside with the Invisible Spray in Lee's hands.]
Lee: Here it is, dudes. The ultimate prank. Invisible Spray!
Thompson: So, what're we gonna do with it?
Nate: We should spray it on something.
Lee: I got it! We'll go to the park bench and then sit on it! When people walk by, we'll be floating in midair!
[They imagine sitting on an invisible bench while surrounded by townsfolk.]
Pizza Guy: They're floating in midair!
Lazy Susan: How do they do that?
[As the thought bubble disappears, the three teens chuckle at their idea.]
Nate: Now THAT'S the ultimate prank!
Thompson: Great idea, Lee! [Gives a thumbs up]
[Lee and Nate walk off, but Thompson takes off his shirt, shorts, socks, and shoes with only his underwear.]
Thompson: Okay, I'm ready!
Nate: [Walks back and looks at Thompson's clothes] Dude, why're you in your underwear?
Thompson: The spray stains clothes, right?
Lee: He's not wrong. Good thinking for once, Thompson. Here, hold this a sec. [Gives Thompson the spary while taking off his shirt, shorts, socks, and shoes with only his underwear]
Nate: Do we really have to take our clothes off?
Lee: Nate, the spray stains clothes. It's just for one prank.
Nate: [Rolls his eyes] Fine. [Takes off his shirt, pants, shoes, and hat with only his underwear]
Lee: Great! Now we're ready! Okay, Thompson, gimme the can.
Thompson: [Hugs the can in a protective manner] Well, I think that since spraying the park bench was MY idea, I should be the one spraying it.
Nate: You didn't come up with it!
Lee: Yeah, spraying the park bench was MY idea!
Thompson: Yeah, but I said it was a good idea!
Lee: Gimme that, ya tub of lard! [Grabs the can to take it back]
[Lee, Nate, and Thompson begin wrestling over the spray can, but during their fight, Lee sprays the can on their clothes, making them disappear.]
Thompson: Hey, the Invisible Spray works! [A tour bus drives up]
Bus Driver: And to your right, if you look, you'll see two teenagers and some fat blob in their underwear and fighting over a can of paint! [Laughs along with the passengers, as the bus drives off]
Lee: [Covers his underwear] This is bad! Help me find our clothes! [Pats the ground, trying to find their invisible clothes]
Nate: [Smirks and sprays Lee's right hand, making it disappear] I gotta HAND it to ya, Lee. You look kinda funny! [Laughs along with Thompson]
Lee: [Sees his right hand gone and screams] Righty! Where are ya?! [Nate and Thompson keep laughing, making Lee angry] No one messes with Righty! [Grabs the spray can] Let's see how YOU like it! [Sprays Nate, creating a hole in the middle of his body] Kinda gives you an EMPTY feeling, huh?
Nate: [Screams while looking at the hole in his body] My mom's gonna kill me looking like that! [Grabs the spray and then sprays Lee's left eye] I can't SEE your point! [Laughs]
Thompson: [Laughs as well] Good one!
Lee: [Grabs the can and sprays Thompson's belly] No GUTS, no glory!
Thompson: Hey, what'd I do?
Thompson: [Grabs the can] Well, now it's my turn! [Sprays Nate's right leg] Sorry, but I couldn't STAND you, Nate!
Bill: Several minutes and bad puns later...
[Lee, Nate, and Thompson are now completely invisible.]
Thompson: [Shakes the can] Um, guys, I think this thing is empty.
Lee: [Grabs the can and shakes it] No! It can't be! Now how're we supposed to pull off the ultimate prank?!
Nate: Way to go, Thompson! You used the last of it! [Throws the can away]
Thompson: Hey, I think I found our clothes. [Ripping noise is heard] Oops! I think these're yours, Lee.
Lee: Ugh, forget the clothes, guys! Let's just go home and wash all this paint off. [Starts walking somewhere with Nate and Thompson]
Thompson: Um, does anyone know what time it is?
Nate: Yeah, Thompson, it's...half past invisible.
Thompson: Gee, it's getting late.
Lee: [Sees Hank] Let's ask this guy. Hey, man, d'ya know what time it is?
Hank: [Looks at his watch] Oh, sure. It's, uh, ten to three.
Thompson: Don't mention what?
Hank: [Freaking out] Uh, who said that?
Hank: [Screams while his eyes pop out] GHOSTS! [Runs away while his eyes scream as well and jump into a car and drive off]
Thompson: Hey, I'm not a ghost! The nerve of that guy and his driving eyeballs!
Lee: Guys, my brain just hatched an idea!
Lee: Okay, we're invisible, right?
Lee: If that guy thought we were ghosts, we could haunt everybody in Gravity Falls!
Nate: THAT'S the ultimate prank!
Lee, Nate, and Thompson: High five! [They give each other a high five]
Lee: Let's go scare us some suckers!
[Tambry is in her room texting on her phone, but then starts hearing noises, which is the laughter of Lee, Nate, and Thompson. Tambry checks to see what is it, but there's nothing, so she gets up and goes for her window.]
Tambry: What? That's weird. I thought I heard voices. [Sees a glass of juice on the floor] I thought I left that glass of orange juice on the table. [Walks over to a table with a lamp covered in trash] Didn't I toss that lamp out yesterday? And since when did I acquire all these portraits of Thompson?! [Photos of Thompson are on the walls and tables while the rug has Thompson's face on it]
[Tambry turns around and sees Lee, Nate, and Thompson covered in white sheets over their heads, as they wail.]
Lee, Nate, and Thompson: We're ghosts! [Continue to wail]
Tambry: [Rolls her eyes] I knew it was you idiots. Okay, you had your fun. Joke's over! Take off the sheets! [Pulls off the sheets, but there's nothing, making her gasp] It is ghosts! [Screams, as she drops her phone and starts running out of her house]
[Lee, Nate, and Thompson laugh, as they walk out of the house.]
Nate: Boy, we really scared Tambers!
Lee: It's like Dusk 2 Dawn all over again!
Thompson: So, uh, who's gonna be our next victim?
Lee: The better question is "who isn't?"
[In Soos' house, Soos is in the kitchen with a plate of chocolate cake in front of him.]
Soos: Yummy yum! Chocolate cake! It's my favorite and I'm gonna eat it! [The cake starts to disappear, as it's being eaten by Thompson, whose face is covered in cake while belching loudly and wipes his face] Dude! GHOSTS! [Runs out of the kitchen]
[In Robbie's room, Robbie is playing his guitar while throwing a knife at the picture of Dipper and Kevin, but then, Thompson grabs Robbie's guitar while Lee grabs a knife and slashes the guitar strings and the three wail.]
Robbie: [Running out of his house] GHOSTS!
[Pacifica is in her bedroom and brushing her hair, but Nate grabs her makeup kit and gives her a messy makeover while Lee takes the brush and uses it to break her mirror.]
[Gideon is having his ice cream while Bud is cleaning one of his cars, but Thompson takes Gideon's ice cream and dunks it on Bud's head while Lee and Nate spray Bud's hose at Gideon, making his hair and clothes wet.]
Gideon: [Grits his teeth in anger] Ghosts...!
Pizza Guy: [Eyes bugging out of his head] Ghosts!
Blubs and Durland: [Huddling together] Ghosts!
Sprott: [Arms on his head] Ghosts!
Gus: [Holds out a piece of toast while smiling] Toast!
Lazy Susan: [Hiding under the counter] Ghosts!
[At the Mystery Shack, the townsfolk are at the front porch and talking over each other while livid, as Dipper is talking to them.]
Dipper: Guys, guys, one at a time! Now, what did these ghosts do?
Soos: They ate my chocolate cake, dude!
Pacifica: They ruined my makeover!
Robbie: They ruined my guitar!
Gideon: They ruined mah hair 'n' clothes with water 'n' ruined mah ice cream!
Marcus: [Shows his destroyed axe] They busted my axe!
Dan: [Showing his face shaved clean] They shaved my WHOLE beard off!
Toby: [His face is covered with pie] And they threw a pie at my face!
Dipper: Well, you can't beat the classics, Toby!
Blubs: You gotta help us, City Boy!
Dan: You're smart and you're the supernatural expert! What're ya gonna do?!
Dipper: Guys, everybody just calm down! I think I have a way of dealing with these ghosts! Just leave it to me!
[Meanwhile, Lee, Nate, and Thompson are reading newspapers while laughing about the pranks they've been pulling.]
Lee: It's official! We're the greatest pranksters ever! The whole town thinks we're ghosts!
Thompson: [Holding his newspaper upside-down] Yeah we do!
Nate: There's only one person left to scare and we'll have pranked everybody in Gravity Falls: Dr. Funtimes! [Sees an article that reads, "Dipper Pines Last To Be Haunted!" "Pines says, 'I've dealt with ghosts before! I'm not afraid! Come and get me, if you dare!'"]
Lee: Dude, maybe we should just leave Dipper alone. After all, he does know a thing or two about ghosts.
Thompson: But he's challenging us.
Nate: And we're gonna accept!
Lee: Guys, maybe we shouldn't.
Nate: Relax, Lee. We're not gonna hurt Dr. Funtimes. We're just gonna give him a good scare and that'll be it.
Lee: [Sighs] Okay, but just ONE scare! That's it!
[It's nighttime at the Mystery Shack, as Dipper peers out of the blinds to keep a look out.]
Dipper: [Turns to Kevin and Dustin] Thanks for coming to help me deal with this ghost situation, guys.
Kevin: Anythin' for ya, bro! I've been itchin' to fight a ghost!
Dustin: But why do you need us? You're the ghost expert.
Dipper: Just in case things go wrong. [Shows his journal, revealing a page of "Category 3 Ghost"] Now, if I'm not mistaken, we're probably dealing with a Category 3 Ghost, which are just types that love to harrass and pull pranks on people. We don't really have to fight them. We just need to expose them. I need you two to distract 'em and bring 'em over to my room. Got it?
Kevin: Sure, but what's gonna happen?
Dipper: Just leave everything to me. Oh, and be sure to hang onto this. [Gives Kevin the journal]
Dipper: Leave it to me. [Goes upstairs]
Kevin: Not gonna lie. I kinda hate it when he gets all cryptic.
Dustin: Me too, but but he says he knows what he's doing.
[The lights turn off, as everything goes black, making the boys look around.]
Kevin: Okay, so now what?
Lee, Nate, and Thompson: [Wail ghostly while opening the front door] Where's Pines?
Lee: [Picks up a lamp] We want Pines!
Nate: [Holds a vase] We've come to haunt Pines!
Kevin: [Holds up the journal in defense] Yeah! Take a hike!
[Lee, Nate, and Thompson moan ghostly while still holding some items to make them look like they're floating while Kevin and Dustin get more nervous.]
Dustin: We're warning ya! G-Get outta here!
Kevin: Yeah! Leave! [Throws the journal, but Nate catches it]
Lee, Nate, and Thompson: [Quietly] Boo.
[Kevin and Dustin scream in horror.]
Kevin: We gotta get outta here! [Runs for the door, but won't open]
Lee: You can't escape, Corduroy! We've glued the doors shut! [The door is held closed with a long strip of glue]
Dustin: You won't catch me! [Tries to break through the window, but instead of shattering, the window stretches like elastic and slingshots him backwards and crashes into Kevin]
Thompson: Nice try, Silver, but we replaced all the glass with rubber!
[Kevin and Dustin run upstairs and into the bathroom, as they try to dive into the toilet, but get stuck, making them pull out.]
Nate: Too late, boys. We've already clogged all the toilets! [The toilet is stuffed with toilet paper]
[Kevin and Dustin rush into Dipper's room and cower in fear, as they huddle together.]
Kevin: Please, ghosts, stop haunting us!
Dustin: Yeah, just leave us alone!
Thompson: [Laughs while the boys are cowering and begging] It's too bad we're not haunting Dipper, but this still fun.
Nate: Hang on. I think I know how to get Dr. Funtimes to come out. [To Kevin and Dustin] If you won't bring out Pines, then you will pay!
Kevin: [Shaking with fear] No, please!
Nate: Pay! [Holds up the journal in front]
Nate: [High-pitched] Pay! [Lights a match underneath the journal]
Kevin: NO! Don't burn Dipper's journal!
Dipper: [Arrives with a bucket of water] Gotcha! [Throws the bucket at the flame to get rid of it, as the water splashes on Lee, Nate, and Thompson, making them reappear, but they're laughing and not noticing they're visible] Well, well, well, if it isn't Lee, Nate, and Thompson.
Lee: [Wiggling his arms and legs like a ghost] We know not these names of which you speak!
Thompson: [Looks down and notices he's visible] Uh, Lee?
Nate: Dude, we're visible again!
[Lee looks down and the three cover their underwears while screaming.]
Dipper: So, you three are the Gravity Falls Ghosts?
Kevin: You guys have been pullin' these pranks on people?
Dustin: Y'know everybody's gonna be mad at you guys if they found out.
Lee: Look, guys, we're sorry, okay?
Nate: Please don't tell anyone. It was just a prank.
Dipper: [Chuckles] Relax, guys. We're cool.
Kevin: Yeah. I mean, we would've done the same thing if we were invisible.
Dustin: That's what we did tonight, right? Had a good laugh. [Laughs with Dipper and Kevin and then Lee, Nate, and Thompson join in]
Dipper: Um, outta curisosity, any particular reason you guys're in your underwear?
Lee: Oh, so the invisible paint we used stains clothes.
Kevin: Well, that explains a lot.
Dipper: Anyway, you three better head on home before someone sees you guys in your undies.
Nate: [Chuckles] Yeah. I think I'd die of embarrassment if that happened.
Dustin: Wouldn't want that.
Dipper: It's getting late. You three pranksters better get goin'.
Nate: Yeah. See ya guys later.
Lee: Dudes, thanks for being such good sports about this. [Leaves the room with Nate and Thompson]
Lee: [Arrives outside the shack] That Dipper Pines, always lookin' out for us.
[A white and round light shines on Lee, Nate, and Thompson, as a crowd of people are gathered at the front yard.]
Nate: Uh, what's goin' on?
Dipper: [Shining the light on them from the parking lot and Kevin and Dustin are with him] Ladies and gentlemen! Live underwear pranksters!
Kevin: Starring the Gravity Falls Ghosts!
[The townsfolk of Gravity Falls begin cheering while Tambry takes photos with her phone while Dan and Marcus point and laugh while a teenage girl whistles at them. Lee, Nate, and Thompson scream while trying to cover themselves while Dipper, Kevin, and Dustin walk up to them.]
Dipper: So, enjoying the show?
Dipper: Kinda. I mean, who else loves pulling pranks than you guys?
Kevin: Ya got counter-pranked!
Thompson: [Still trying to cover himself] They truly are the masters of pranks!
Lee: We shoulda bought that whoopie cushion! [More cheering and whistling are heard]
