Top Definition
A group of between 10 and 1000 men jerk off into a bath tub. When it is full, a classy brave slut then gets into the tub. After DNA testing is complete nine months later, the man whose baby it is wins. Betting is encouraged. Also know as man-seed aquifer
This girl totally got in our cum tub and I won!
by christjaws October 24, 2008

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