A girl who holds to traditional protestant christian beliefs who also exhibits typical slut behavior.
A christian slut, is different from a regular slut, in that they do not follow threw in any sexual acts. Actions like: kissing, sex, blowjobs, etc. are strictly prohibited in there world view.
Yo, that girl turned out to be a christian slut.
Dude: Yo, you get with that chick the other night?
Dude friend: Na bro, turned out she was a christian slut and just wanted to cuddle.