Top Definition
This particular action is very complex, common and often committed accidentally.
So The Bum Cum aka The Gay Wedgie is when a Male is masturbating and as he reaches his climax and ejaculates he accidentally without realizing cums into his own underwear. Being oblivious to what has just happened the individual pulls his underwear up with an awkward warm sensation onhis behind.
In other words cum all over your own Ass!
"Dude I was just jackin' off to this totally Gnarly guy called Chuck Norris and I gave myself The Bum Cum aka The Gay Wedgie!!"
by KJizzed May 29, 2009

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