Top Definition
The warmth given off by one's ass
Oh My Gosh Katrina! Your butt heat kept me warm all night long!
by megan=o & alexa-o February 14, 2005
the act of giving off heat with your butt.
DAMN, KATRINA! you're butt heat is giving me a heat rash!
by alexa-o and megan=o February 11, 2005
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