A woman with large and longer 'flapping' style vaginal skin

The result of stretching one's scrotum as wide as one can to create a winged effect.

Best when done in a hot shower... to obtain maximum stretchage.

Large, very large, monsterous pussy lips.

when your arms are so jiggly, when you move them, you have bat wings

when a man exposes his testacles and spreads his skin it appears to look like a brain with bat wings.

(n) A humiliating yet humorous gesture performed by stretching the skin of the testes in opposite directions to resemble the wings of a bat

A vagina that is loose and saggy with little black hair sticking out of it that if looks like a pair of bat wings.