A word used to describe yourself when you let someone know what you feel about them or there actions in a negative feeling without sugar coating it.
Jane: Hey what you just did is just dumb
Jeff: Stfu Jane
Jane: I'm just being SirButtButt
Someone who like to but into conversations that he is not supposed to be in. Usually likes to complain a lot about other people but not about themselves.
Guy1: This place sucks just like everyone in here.
Guy2: Hey man you should just be quiet.
Guy1: Test the waters buddy
Guy2: Stop acting like HotTheThot