When you have somebody sit in your mouth bare ass. The asshole properly aligned with the throat and cheeks spreads. Then a fart is blasted into your mouth.
Johnny squatted over young Susan and proceeded to blow out a steamer in her mouth. She held it in for ten seconds. It was the best Boston Boiler she ever had.
by Copyright Chaos April 3, 2006
Get the Boston Boiler mug.the act of defacating one's self underneath the bedsheets and pulling the covers over antoher's head as to force them to partake in the experience. A scat/dutch oven combo.
by Noah Ben and Norm June 11, 2006
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