A very permiscuous girl (slut) who also has a very bitchy attitude. (bitch=mutt).
That girl I just met from the bar totally wanted to blow me but I could deal with her bitchy personality anymore, damn slut-mutt.
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A dog carried around usually in a hand bag by celebrities such as Paris Hilton.
Check out that slut Paris Hilton over there carrying her Slut Mutt. I bet she uses her furry checkbook to pay for everything as well.
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An insult that's worse than ur dad lesbian, but not quite as bad as ur granny tranny.
Cyan: Ur mom gay.
Sapphire: Ur dad lesbian.
Cyan: Ur mutt slut.
Sapphire: Ur granny tranny.
Cyan: *mentally* Dammit, what came next?
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A guy who consistently seeks the companionship of slutty girls.
A guy who prefers to date sluts.
See: player playa dog hound whore-monger
Tyler spent the evening on the net chatting up multiple sluts trying to arrange a hookup. He is such a slut mutt!