When a bunch of dudes stand in the middle of a circle back to back and around the edge of the circle there are women with their bare asses pointing toward cluster of dudes. The men spin in a circle while music is playing, and when the music stops the men all try to start having anal sex with one of the girls. The guy who doesn't get to a girl gets knocked out, and the last man standing wins.
"Bro, wanna get together with the gang tonight?"
"Eh, I don't know..."
"C'mon, we'll play musical butts!"
"Oh, well in that case count me in!"
by The Foreskin Phantom April 13, 2014
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possibly the most elusive of all butt-shapes, music teacher butt can be described as unusually long and increasingly droopy toward the south end of the caboose. nearing maturity, MTB begins to resemble a second bosom. music teacher butt affects 1 in 3 music teachers in the United States and, interestingly enough, also occurs in 1 out of 30 female band members. to spot MTB in the wild is rare, and should therefore be deemed a special moment in one's life.
1) damn, she got that MTB! was that Mrs Denny?

2) i just got back from the obstetrician and she diagnosed me with music teacher butt. dammit!
by friznani August 10, 2007
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butt music, noun: Audible gastro-intestinal disturbances, not neccessarily of a melodious or harmonious nature.
Rock's butt music scared the children, upset the guests, and rattled the windows!
by Kowulz March 31, 2007
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1. A term used to describe shitty music that cannot fit into a genre.
2. Invented by the greats, Beavis and Butthead.
Johnny Commando: I heard this new song by ______, it was total peruvian butt music.

Hans Lickenbush: Thats weird dude.
by Anastasia Beverhausen October 9, 2005
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