The emittance of odor and/or air,from the vagina.
All hopes of oral sex were thwarted by the beaver fog
by edbonicsED8 October 11, 2013
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A heinously ugly girl who could not have possibly emerged from anywhere else but the fog. She is the type of girl who appears in your bed on a Sunday morning that you immediately recognize as a mistake and try to evict as fast as possible and take every precaution necessary to make sure your friends do not find out about her.
John: Did Jack bang that girl he was making out with last night?

Samuel: I hope not dude. He asked us to help him out by making sure he didn't end up fucking any ugly chicks and that girl was a real fog beaver.
by Mavericknotgoose March 11, 2012
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