1- puj (pronounced pudge), also P.U.J., stands for pick up juice. It is used in context as a verbnoun, to ask a friend to pick up juice as they are in a more able position to pick up juice, since you're probably sitting on the couch.
man1: Yo man, could you puj one for me?
man2: Hell yea dude, be back from class in 5.
NOTE: Not to be confused with pudge one for me, which oft means to take one for the team on a friday night.
The hard, spongy textured layer of jello found at the bottom of the bowl. It formed when jello isn't eaten for a number of days, thus becoming hard and losing taste. The act of biting into this layer gives you a nasty taste and texture in your mouth...SURPRISE!
Mom: Tonight we're going to your aunt's house to have dinner.
Child: Oh great...then for dessert we get to eat Uncle Don's week old jello with the jello surprise.