A derogatory word for a white girl in an interracial relationship that stereotypically acts of her partners race. Or the feminine version of a Wigga or Wigger.
The word bun comes from the common appearance of wearing hair in a twisted up raggedy moussed or greased up bun. Bun Bitches are prone to speaking with a fake over exaggerated southern, Latin accent along with speaking excessive amounts of slang and other activities that she perceives to be used amongst her partners race and community. Although common, this term is not limited to black men and white women.

Living example: Ice T's wife CoCo
by Chicanedkat March 24, 2011
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A type of hair style where a girl quickly puts her hair in a bun on the top of her head in an disorderly fashion. The majority of girls you see in public with this hair style are in fact huge bitches. A bigger bun results in a bigger bitch.
Guy1 "Wow, why was Teagan being such a bitch last night??"
Guy2 "Didn't you notice her bitch bun? I saw that and could tell she was going to be trouble"
by kanixluvsteagz January 11, 2011
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(n.) -when a basic-ass bitch puts her hair up in a nappy-ass bun, and usually tweets about it with 10-15 hashtagged phrases, such as: #lazy #stillcutetho #starbucks #pumpkinspicelatteyum #comfy #bunnedout #uggs #sweatpants
Has anyone coined the term "basic bitch bun"? No? Let's go do it right now.

Loot at that basic bitch bun walking outta Starbucks right now with her Pumpkin Spice Latte. I bet she's tweeting about it right now.
by Djardis September 24, 2014
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The hair style that is frequently worn by dumb bitches and consists of a floppy bun that is typically messy, and it situated directly on top of the head. Usually accompanied with a thick head band.
That girl is totally wearing a dumb bitch bun....probably because she's a dumb bitch.
by kikisly March 29, 2012
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