Top Definition
Similar to hydroplaning, the act of slipping on lost sperm usually found on the floor.
"Dude, I almost cracked my head today."
"What happened?"
"I was cumplaning."
"That's why I have carpeted floors"
#cum #planing #hydroplaning #cumplaning #slip #hardwood #accident #complaining
by AirRoar February 25, 2010
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