Top Definition
dude who likes to have sex with other dudes
"Don't date Jim. He's a butt slammer and he'll try to fuck your brother!"
by Donna K. March 28, 2003
2 more definitions
a fag who likes to be the fucker....not the fuckee....
my boss is a huge buttslammer (i'd like to think)
by brian m. williams May 20, 2006
Cpl Van der hart of hmm-163
dude vander is such a chachi ass buttslammer
by big dirty July 16, 2004

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