Top Definition
When a human with the male genitalia, swings, shakes or slaps their genitalia around without the assistance of the hands whilst using rotation of the hips and/or movement of the knees to create any form of movement of the genitalia.
"When I get out of the shower and look in the mirror, i begin to flod", "Flodding is a great form of exercise" and "Men in jail enjoy flooding in the shower room".
by scottyboobotty April 14, 2014

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