BUEFF is simply known as the ultimate word. Other than rare occasions, BUEFF is always written in all caps. It can be used in place of any word when ultimate meaning is needed. It can also be used by itself, followed by at least three exclamation marks. There are rumors that it is to be used as part of a code in a future game that causes you to win in an ultimate fashion.
The act of pouring pepper down a girl's or guy's asshole before giving anal, then making the reciever fart out the pepper right before the giver jizzes on their back.
Guy 1: Yo dude, while you were sleeping i brought this hot ass chick back into our dorm while I was drunk last night and gave her The Jalapeño Popper of a lifetime.
Guy 2: Huh thats wierd...
Guy1: What is?
Guy 2: My asshole has felt like an open fire since this morning.