Top Definition
An expression of onomonopeai just like Bang or Kaboom. You say fwoomph when something large hits the ground or when something critical to the mission is achieved while stoned.
Stoner 1: Dude, did you see that dude fall when he uhh fell?
Stoner 2: Ya, he hit the ground like fwoomph!
by Mike April 25, 2005
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