Unlike bats wing
which is performed purposefully, Bat Wings are the spreading and sticking of ones sack to the inner thigh. Usually happens at random, in summer months and is caused by the heat and persperation from the hey-nanner-nanner region.
Guy1: Dude, what the hell are you doing down there, have you got crabs or something?
Guy2: No, sorry man just have to adjust the bat wings.
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