in basic terms: a grub. dirty kid who starts fights at parties for no reason. usually hangs out in the kitchen at a party, segregated from the rest of the group. main objectives are to fuck the gross girls and drink all the beer in the fridge for free, then leave.
Mark: "do you want me to invite jesse?"
Dan: "fuck no, he's a kitchen kid. if he comes, then all his grubby kitchen kid friends will want to come."
Mark: "church to that!....'UNFRIEND'"