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1.
Having an orgasm from listening to a David Bowie song.
I had a Bowgasm when David Bowie sang my favorite song in a concert
by AxK54 September 21, 2011
 
2.
Bowgasm: Noun. Intense joy, followed by rhetorical questions and tears of joy or sorrow after seeing a double rainbow. Usually involves psychedelic substances.
Bear: Look at that rainbow! It's almost a triple rainbow! It's so beautiful. What does it mean? (sobbing and crying ensues.)

Vasquez: Dude, you just totally had a bowgasm.
by His Royal Flyness August 08, 2010