the act of orgasming at the site of very powdery snow. sometimes caused by the vibrating chairlift.
Powdergasm-

"Dude look at that gnar pow!"
"Oh man bro! We better get off the lift soon or i'm gonna have a total powder-
AHHH, OHHH YESSS"
by afterbang February 26, 2010
Get the Powdergasm mug.