Top Definition
Semen on one's stomach. The resulting state whilst having unprotected sex, when your partner pulls out and ejaculates on your abdomen.
I really need to get on the pill, John has totally been pulling the ol' cum tum.

unprotected sex birth control lazy
by tezbuh June 08, 2009

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When someone is constipated after having sex because of swallowing too much cum.
Girl: Doctor I have a stomach ache. Doctor: Did you have sex the past day? Girl: Yes. Doctor: It sounds like a classic case of cum tum!
by Stonewoof December 20, 2015

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

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

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt