Top Definition
a girls vagina when she is overly large and her vagina hangs over her underwear resembling a muffin
ew gross i bet that ones a poonmuffin!
by DOUG LEIKUM May 03, 2006
2 more definitions
poon muffin cameltoe
Those pants were too tight,you can see her poon muffin.
by pdub253 March 30, 2007
a twinkie
he went to the store to buy some poonmuffins.
by jesse merriman May 12, 2003

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