Top Definition
The act of obtaining an erection with your anus, or "bum". This exhilerating phenomenom can be experienced by both female and male anus, however most common in homosexual males. A bumrection usually lasts somewhere in the vacinity of 5 minutes and 29 hours). Commonly experienced when watching Ben Hur...of which no people are bigger than.
-Why, your bumrection is rather large today...may i penetrate you?
-Heidi:"Wow...what is that odd yet arousing sensation in my rectum...could it be a bumrection?"
Charles:"I'm not entirely sure... but may i poke/prod around and have a look/feel?"
Heidi:"Sure, just dont touch the bumrection....its my first and i shall frame it :D "
by Whilma Zan Zeyk nstein January 19, 2006

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