Top definition
An act in which a sexual partner sticks his middle finger into his/her partner's anus, and then proceeds to flip them off; or, in other words, flip them the bird.
I was so mad at that bitch that I gave her the brown bird and kicked her the fuck out.

That slut laughs like a bastard whenever I give her the brown bird.
by TimesNine June 28, 2009
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