arm pussy
When the skin at a womans arm pit folds to resemble a pussy. Arm pussy, often abreviated to "AP" is the ultimate form of voyuerism. Firstly, women don't hide this part of their body in public, but more importantly AP is a very close representation to a womans actual vagina in terms of lip tightness, and hairyness. AP is a public preview of private nudity.
Christ, check out the the arm pussy on that chick at the next table.
Under Arm Pussy
The space between the side of your arm that connects to the torso -- especially with a weight lifting guy. It forms a unique pouch area.
Under Arm Pussy (UAP)
Pussy Arm
1. In cheerleading when a male cheerleader goes to catch the falling cheerleader out of the air and accidently misses punching the girl into her pussy upto his forearm.
1. Look at that male cheerleader, he has that girl's pussy on upto his forearm, nice pussy arm.