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The act of being a giant slut/whore.
Also, a term of endearment.
OMG! Did you see Dan with that girl last night? She was SUCH a slutterbutter.

Girl to her friend: "Love you slutterbutter." <3
by HRA623 May 17, 2011
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3
a promiscuous girl who spreads her self all over like butter
dam that bitch is a serious slutter butter who molly yea she was just with some other guy last night.
by gizmorpheus May 09, 2015
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5
a promiscuous girl who spreads her self all over town.
dam molly is such a slutterbutter she banged three guys in one day
by gizmorpheus May 09, 2015
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