1. the sexual act of inserting a penis into someones anus and repetedly thrusting.

2. a mexican wearing a teacup as a hat
1. me and megan were having buttsex last night since i forgot my jimi hat

2. YOU STUPID BUTTSEX WHERES MY NIGGER?
by niggasense May 2, 2005
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Buttsex is sex between two guys but it's not gay.
buttsex. two guys. not gay.
by Doctor Hate December 21, 2006
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what everything revolves around
why kobe bryant's in trouble
damn kobe's on trial cuase of some harmless butsex?
by MugFlashingShavers November 9, 2003
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1) It's wild.
2) It don't Make no Child
3) It is most enjoyable with Mountain Dew and Bill's Mom.
I buttsexed Bill's mom like thirty time last night!
by The Pete November 14, 2003
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my penis feels warm and good when i have buttsex with kelly.
by jimbob November 14, 2002
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