Slut Theory 

A theory that states that any girl at the bar who says "I'm not a slut" without being provoked or actually being called a slut...is always a slut.

Aaron: Hey can I buy you a drink?
Jane: No...I'm not some sort of slut!
Aaron: I never said you were.

Aaron(to friend Matt): Did you hear that girl?
Matt: Yeah man, Slut Theory says shes definitely a slut! Go for it!

...later that night after hooking up...

Jane: you must think im some kind of slut huh?
Aaron: yeah...kinda

Slut Theory by clunICE April 9, 2009

theoretical slut 

Someone who dreams about banging everyone but won't actually do it.

"He is so hot."
-"Oh please, we know you won't actually make a move on him!"
"Yeah but I think about it!!"
-"Gosh, you're such a theoretical slut!"

theoretical slut by shelovesthed3 March 20, 2015