knows whats up

A descriptive measure of a woman's predisposition to engage in sexual activities.

AKA: Down to Fuck, Puts Out, Down with the D

Person A: Hey, you that chick over there?
Person B: Yeah, I bet she knows whats up.

by Bed Knight October 03, 2009

make out arm

The associated shoulder and arm muscle soreness from propping yourself up while hooking up for an extended time.

Sally is such a lazy whore, she just lies on the bed. All this work is giving me make out arm.

by Bed Knight January 07, 2008