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1.
Onimonapia (meaning word that is spelled like a sound) that is supposed to stand for 70's guitar Porn-riff. Usually this is the music that came on when the action was just about to get started. It has been used in a subcultural context to denote any porn-like or pornified situation.
Your friend picks up an extra large sausage. This is a great time to sing Bow Chicka Wah Wah.

You see a hot guy/girl that you could imagine yourself in a porn with. Also a good time to sing Bow Chicka Wah Wah.
by BowChicka April 12, 2007
 
2.
a term used when sex is at hand
"Im here to clean your pool"
"I dont have a pool"
"Bowchickawahwah"
by da to the mo May 28, 2007
 
3.
Adj. DEscribing one's personally affections towards another being, or animal, or item (animal, and item people are freaks).

V. A sexy way in which walking to a destination(walking like the Beejees)
"Tommy BowChickaWahWah!'ed all the way to the meat market, feeling snappy with his knew leather jacket"
by Matthew Quick November 09, 2007