Stinky snap
The means by which a man tests the sexual history and fidelity of a woman. Using one hand, the thumb is inserted into her rectum and the pointer finger is inserted into her vagina. The man then snaps his fingers. The higher the quality of the snap, the lower the quality of the woman.
"After being able to accomplish the Stinky snap with ease, I knew the bitch had way too much wiggle room for my tastes."