Top Definition
A cloth object use to clean up cum dripping out of a girl after a cream pie

i.e. The literal shirt off a guys back, a towel, etc.
"I just shot my load in her, now I need a cum diaper to make sure it doesn't drip out everywhere"
by Cumguzzler96 February 08, 2015

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Another word for a condom.
They can make them as thin as they want but it will always feel like a cum diaper.

Who left a dirty used cum diaper in my car?
by Denagnag September 17, 2009

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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