How do you think the SP dads celebrate a typical Father's Day
Oh this is fun lol. I think these are actually kinda fluffy and wholesome lol.
Randy:
Randy really wants a big deal to be made about Fathers' Day. Like this is something that's really important to him. Even if he sometimes has his huge blind spots and misses the freedom sometimes, at the end of the day when he thinks about it, he loves being a dad. So he's gonna plan a big-ass trip for him and Stan... and then midway through remember he also has a daughter. So he works on planning a big ass trip for him, Sharon, Stan, and Shelley. While leaving Grandpa out, which then pisses Shelley off because he's a Dad too and "how do you expect us to like you dad when you don't even like your own dad". Hijinks inevitably ensue, Randy ends up apologizing to everyone, and then they all end up having an okay time at the apology event.
He really wants to be a good dad and he tries really hard. He's just. You know. Randy. And probably would benefit from ADHD meds.
Gerald:
Gerald is That Asshole who always talks about what his wife and kids end up doing for him and it 100% always annoys every single one of his friends. Usually Kyle and Ike will get him little presents, and then they'll go out to a restaurant or some boring ass thing that he specifically likes to do. Kyle's more into it than Ike usually is, so sometimes he tries to overcompensate with Ike. All in all though, it's a generally fun time and while he SAYS he's fine if they do nothing, it really does flatter his ego that his kids put in an effort which he doesn't need at all. He likes to feel like he's doing something right as a Dad, and Father's Day almost always does that.
Oh, and I HC 100% that Kyle bought him that #1 Dad mug he keeps on his desk one year. The Father's Day after S20 he tried to give it back to Kyle who didn't accept it and was like "Dad what the fuck". He contains multitudes.
Stuart:
He doesn't want his kids to do anything for him. Because he's pretty sure he's a shitty Dad who's just as bad as his own father was. So mostly he plans to sit on the couch and drink.
But then Karen always makes Kenny and Kevin do something. They'll scrounge money together, get him a cupcake, or something else small, like a swiss army knife. Which honestly always makes Stuart tense up a bit because no, he definitely doesn't think he deserves this. But in the end he takes them out and does something like play catch, or throw rocks at cars together. Kevin usually bails halfway through because I think he and Stuart probably have the worst relationship and there's only so much he can take (they probably argue), but Kenny and Karen have a really good time regardless.
Except... for those years where Kenny dies. It's just an occupational hazard.
Stephen:
Butters always goes out of his way to try and do something spectacular on Father's Day and enlists his mother's help for it. Linda's usually happy to go along with it because he always pulls out all the stops for Mother's Day too. Things occasionally do or don't go according to plan depending on Stephen's recent extramarital activities. But regardless of Linda's questionable mental state, every year, Butters will make something absolutely spectacular (chocolate chip pancakes, freshly pressed juice, eggs benedict, the works) for breakfast. It's all great.
And then at the end of the day he grounds Butters because those pancakes just weren't moist enough, Mister. Gerald Broflovski's kids do way more for him, why can't you be more like THEM Butters?
BONUS: Jimbo's never going to have kids, but I do imagine that Liane's phoned him up before to hang out with Eric for Fathers' Day... if Eric's not being a little shit which is like. Always possible. Ned sometimes comes too. I do think that regardless of things, Eric does genuinely really like Jimbo. IDK it's cute.