Plum

Noun. The act of sticking one's thumb into a female's anal cavity during foreplay(often at the same time as fingering). Then take the submerged member and proceed to lick it clean. Once you have depooped your thumb, you must say to the girl one of the following quotes:
"You have just been plummed"
"I fixed your toilet"
"Bitch im a plummer"
Or "that tasted like shit"

Dude, that girl is so nasty that she let me plum her.

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