Dusty Crystal 

A dusty crystal is a slang term commonly used to describe a rare sexual experience involving narcotics, specifically crystal meth. The man first inserts some amount of crystal meth into a woman's anus (the amount depends on both the thrill desired and the inner diameter of the woman's anus). After a satisfactory amount of crystal meth is inserted, ie there is no leakage, the man sits behind the woman, with his face very close to the woman's buttocks. Once the man is ready, the woman violently induces flatulance and the man inhales deeply through his nose, intaking all the previously inserted crystal meth and any other gases.

Hooker: "Hey baby, want some company tonight?"
Man:"How much for a Dusty Crystal?"
Hooker:"What's that?"

Dusty Crystal by sm00th February 20, 2009