Top Definition
When a women has become overweight to the point of having a large, sweaty, cheese producing flap or roll of fat hanging down over her puss.
Check out the poon flap on roseanne.
by matt March 28, 2003
poon meaning pussy and flap meaning....flap
her poon flaps are so big, u could use them for a blanket.
#pussy wrinkle #poon wrinkle #male form would be penis wrinkle #penis flap #poon flap
by lisa moon May 07, 2006
just look at your mom's snatch... you'll know...
Oh my fucking christ, your mom has some gnarly poonflaps.
by fat fucking penis March 21, 2003
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