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1. noun The female genitalia. Probably originated from performing the act of oral sex on a woman who doesnt trim often, However it can also apply to a female with any legth and/or style of pubic hair.

2. Used to describe the unsatisfactory attitude or demeanor of another.
1. I had a little hairburger on my lunch break but no sex.

2. Man you are such a hairburger.
by Evan Schmit December 09, 2005
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