Someone that has gotten anal sex.
I was that guy's butter dumpster.
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A human being (most of the time its a man in prizon) who likes another man's load to be dumped into his/her asshole.
hey man I heard on the news today that the Jonas brothers and Justin Bieber and all butter dumpsters! Im gonna go make a butter dumpster out of my wife now
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1. A slut, whore, skank or prostitute.
2. Butter = Jizz, Dumpster = Guess. (guys put a lot of butter in that dumpster
3. Usually used in a sentence to describe a woman or man you do not like, or literally a dumpster full of butter.
Scene: 2 AM at a night club
Girl 1. - Oh my god, look at that girl in her thong dancing in front of all those guys!
Girl 2. - I know! God she is more than a slut shes a---
Girl 1. - *Butter dumpster!*
Girl 2. - Your right! What a batch!
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