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A term commonly used in reference to a man's erection. Basement meaning pants, and the kangaroo speaks for itself...
"Derick totally had a kangaroo in the basement when he was helping you on your golf swing today."
by Melissa Egan February 14, 2007
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Phrase commmonly used to describe a male's erection. Basement refers to the pants, kangaroo...well that speaks for itself.
"Daaamn son! Thurs no way you coulda hid that kangaroo in the basement."
by Melissa Egan January 29, 2007
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