Top Definition
to ejaculate semen onto a partners anus
after gaining my brown wings, i enjoyed buttering the crumpet
by Ginger kite sack June 14, 2011

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When you cum while pooping at the same time and the cum is spread on the poop before it hits the water. The penis may also be used as a buttering knife.
Yo' Derek what are you going to do later?
Probably just go home, drink a few beers, and try to butter the crumpets again.
What? Yo, buttering the crumpets is easier when you don't drink.
by poopbutter July 11, 2013

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