When something is underwhelming or disappointing. Most often used in a context that involves a person describing the poor state of something, such as a meal or TV show.
"Dude, this caf food is straight buttslap." "I'm bummed bro, that movie was buttslap."
Someone who overestimates himself, believing himself to be something that he is not.
Origin: A friend of mine thinks he can "sing like a lark" but he sounds like ass.
Jonny is such a Buttlark, he cries like a baby, but he thinks he is really tough.
the white stuff that comes out of a rectum after prolonged anal sex, usually when theanal cavity is stretched and unable to close.
Man 1: Dude, there was a cheerleader in the guys locker room
Man 2: Wait what?
Man 1: Yea, she took the whole football team up the ass, she blew out and everything
Man 2: *shudders* Ugh.. thanks for the mental image of buttlard man