Summary: Blue tickles Purple to get him to laugh.
Purple was just minding his own business, spending time in his favorite place in the vents, when suddenly he heard something coming towards his direction, and it was in the vents with him. Purple's only option was to escape so he removed the vent cover and successfully escaped the vent intruder, but then he got pinned down by someone he knew all too well.
"Well that got you out, didn't it?" their voice said. Purple looked up to see Blue standing over him, pinning him down.
"Blue, what's going on? Did Red put you up to this?" Purple said, assuming that Red was responsible.
"I can see why you would think that, but no. This was all my idea," Blue said, taking a jab at Purple's stomach, resulting in a jump from him.
"Hey, that tickles!" Purple said as he tried jerking his sides away. Blue was shocked by how childish this was, but was also taking amusement in seeing his friend squirm helplessly.
"Aww, now that's cute," Blue said, running his hand along Purple's stomach, causing him to giggle.
"S-stop it! I'm too sensitive," Purple tried protesting through his stream of giggles. Blue wasn't having it, so he ran his hand along Purple's side, tickling even more, making him burst out laughing.
"Aww, how adorable," Blue said, doting on Purple.
"BLUHUHUHUHUHUE! STAHAHAHAHAP IHIHIHIHIT! I'M TOHOHOHO TICKLISH FOR THIHIHIHIHIS!" Purple protested through his laughter. According to Purple, Blue was very skilled at tickling. Even Blue had to laugh knowing he could get Purple to laugh and have fun at the same time.
"Coochie coochie coo, Purple," Blue said, tickling Purple more, by rubbing his stomach with one hand and tickling his side with the other. Purple was overwhelmed with hysterical laughter, even Blue had never heard him laugh so hard.
"THAHAHAHAT'S EHEHEHEHENOHOHOHOUGH! HAHAHAHAVE MEHEHEHEHERCY! STAHAHAHAHAP IHIHIHIHIT! THIHIHIHIS IHIHIHISN'T FUHUHUHUHUNNY!" Purple continued to protest through hysterical laughter. Blue just rolled his eyes and smiled.
"If it isn't, than why are you laughing?" Blue joked. "Oh, that's right. You're being tickled by one of your friends."
"JUHUHUHUHUST MAHAHAHAHAKE IHIHIHIHIHIT STAHAHAHAHAP! I'M TOHOHOHO TICKLISH FOR THIHIHIHIHIHIS!" Purple pleaded through his laughter, which was hard.
After twenty minutes of nonstop tickling, feeling like hours for Purple, Blue drew his assault to a close and released him.
"Whaddya say we get Red?" Blue said as Purple was catching his breath.
"There's... something... I... need... to... take... care... of... first..," Purple said between breaths.
"Ok, we can get Red afterwards, in the meantime, catch your breath and do whatever you gotta do," Blue said, going to make plans.
That night, Purple lied in bed for minutes, then he decided to get Green the next morning, since it's easy to sneak up on him.