The act of having a sexual act "doggy style" and then putting a hollowed out pumpkin on the recipient of the "doggy style". Then once the recipient looks like that sleepy hallow dude, one humps the monster through a wall. Thus the pumpkin chunk.
Browski #1: Dude its halloween are you gonna bone that chick.
Browski #2: Ya bro, im totally gonna be pumpkin chunkin that whore tonight
Browski #3: Poop Dick bro Poop Dick.
Chucking a Corey occurs when an individual condemns an act that they initially encouraged with the intention of destructive comedic pursuit. This phenomenon is also thought to be self-sustaining as it can only be ceased after the condemner has brutally abused an individual beyond the point of psychological moronism. Problems can often arise if the mentality becomes osmotic within the mob mentality and several Corey’s are spawned within the same tribal group.
Although still unknown, masculinity (and its inherent lack of), is thought to be the biggest cause of Chucking a Corey.
Corey: (at party) You're so weak, you're not even drinking, you never drink!!
Other person: Yeh you're right! *gets a beer*
Corey: Dude why are you always drinking for? You don't need to drink to have fun...(chucking a corey)