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1. b flat
when you don't have a full blown boner
i was looking up her skirt and i got a b flat
2. B Flat
A fart that has a lot of bass, as opposed to being a squeeker
Jim: Holy shit Mark, that was one stinky fart.

Mark: Yeah, it was a B Flat.
fart loud bass ass gas
by CMBC Apr 7, 2011 add a video
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