Top Definition
When the ball sack skin sticks to the inside of the legs and stretches out, making the sack look like a bat wing. This generally occurs due to excessive heat and sweat and can be avoided with a light dusting of the nuts with some baby powder.
Chris: I can't go see my girl with bat wing syndrome
Chad: don't worry man, dust your nuts lightly with this baby powder and you're all good
by chadlamo April 13, 2011

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