It's something you say after your
male classmates with brains filled with illusions by the fact of your
boobs are growing invite you to throw rocks at colorado
local cars and SUVs.
Stan: Ah, hey, Bebe.
Bebe: Yeah?
Stan: Uh, we're gonna throw rocks at cars later on, and we thought
maybe you'd like to join us.
Bebe: Really? I've never done that before.
Butters: Wuuhh, it's really fun.You toss these little rocks at cars, and if the driver gets angry, you blame me.
Kyle: Yeah, it's cool.
Bebe: Why sure, that sounds hellafun.
The boys: Hahahahahaha...
Kyle: Yeah.
Stan: Hellafun
Cartman: Right, heh.
Clyde: Wow, hellafun. That's awesome.
Token: I'm gonna start saying that now.