Top Definition
Explosive diarrhea. When you can no longer hold it in and when released, comes out in an explosive manner. See also assplosion
After eating all that Mexican food, I developed a bad case of butt blow. Man, I needed a whole box of matches to clear up the stench from that one!
by wesleywillis October 18, 2007
When someone farts on a penis during anal sex
That butt blow felt great
by lgmjr93 October 20, 2011
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