Brain Stomach is really bad stretch marks on a womans stomach after birth.
Man..... ! That girls brain stomach is so bad she's got to tuck it in like a shirt.
#stretch marks #bran stomach #stretch marx #flappy skin #bat wings
by Gervaso Silva March 17, 2009
Top Definition
A stomach of a woman that has hundreds stretch marks, usually due to her being previously pregnant and/or fat, then losing weight, but keeping the stretch marks. Resembles the wrinkles in a person's brain. On her stomach.
Bob: "Why doesn't Jane ever wear a two-piece bathing suit?"

Johnny: "Because she has Brain Stomach."

Bob: "Oh."
#stomach #gut #pregnant #woman #women #fat #stretch marks
by ThreatMatrix January 19, 2008
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