Baboon Ass
{noun). When a man gets up from a sitting or squatting position too quickly, inadvertently having his scrotum slip between his legs. As he straightens up, they get trapped tightly underneath his ass cheeks, thus displaying swollen genitalia turning red like that of a baboon.
"I regret wearing boxers today because I got up too fast and got instant baboon ass! Now my balls hurt!"
Baboon Ass by Mr. Bravo December 21, 2008
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