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1.
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 25, 2010