May be used as a compliment.
The female version of studmuffin.
Can be used to describe a woman who is outwardly very sweet, but has a very sexy side behind closed doors,
or someone who is outwardly both very sweet and very sexy.
Rarely used as an insult because of the cuteness of the term.
Slutmuffin you are so sexy!
My girl is a total slutmuffin.
Did you see that slutmuffin? I'd totally tap that!
That Librarian is cute, I bet she is a total slutmuffin.