A male homosexual who assumes the passive position during an act of anal intercourse; a "bottom." So called becase of the discharge of semen into the bottom's rectum.
"In his anxiously awaited autobiography, songwriter extraordinaire Bernie Taupin reportedy claims that his erstwhile partner Sir Elton John was a 'sperm butt' during the years of their collaboration."
-- Liz Smith, NY Daily News
-- Liz Smith, NY Daily News
by Tunmy AuGratin February 25, 2006
theirs a ginger sitting in front of you in the bus and you start harrasing him, when he starts to talk you yell,shut up you "sperm burping butt pirate"
by MR. Bower April 28, 2009