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1.
noun
pronounced: buh-NUNCH

used to describe the appearance of a vagina as being similar to the appearance of a side-view of a roast beef sandwhich. The comparison is based on the fleshy, multi-layered folds existing in both roast beef sandwiches and vaginas.

"Look at your sandwich, it has total bununch!"
"Yeah, looks just like your mom's bununch last night!"
by saltcityboy August 01, 2006
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