Top Definition
The post ejaculation penis withdrawn from the bung hole after anal sex.
After giving his girlfriend a good old fashioned anal pounding, Carl pulled out his Butter Worm and rubbed it on her chin.
by Bee J. Ho March 28, 2015
1 more definition
5 Words related to Butterworm
The wormyness of butter combined with potato salad
OMG!?! It's a Butterworm... duck.... take cover.... go for the bunkers and cover yourself in turbaconducken
by Teh Lulz0r December 17, 2008

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