The resultant covered penis of heavily lubricated anal sex, looking much like a finger coated in butter.
After I was done with her I had a huge butterfinger, so I smacked her on the forehead with it a few times to get some of the shit off.
By smoog
A finger going up the anus of a male being fellated (gay or straight).
Ed loved it when Sally gave him butterfinger during fellatio.
By BlackMamba23
when you take butter and put it on your fingers and shove them up a girls vagina.
i butterfingered that whore , she was buttered
By PolishWhore
To lube your finger up with butter and then insert into the rectum of another individual.
I'd like to butterfinger her!!!!!
By The Lord of the Butterfinger
The preferred food of hentai-wanking Santa Claus look-alikes who put on fake British accents and want everyone to think they're cool.
Andy: All hail Dictator-for-Life Santa! Me: Fuck off and die. Andy: I'd *rother* eat this Butterfinger while I watch this Sailor Moon tape I borrowed from the substitute! Me: I really did not need to know that. Andy: But it made me cool, right? Oh, I injured myself somehow!
By Anarchist