Top Definition
When a guy (or a girl) signs a woman's chest, putting whatever they want on there. Popular on Facebook.
Dude, I asked Lindsey for a tit sign and she said yes!

I love it when guys ask to tit sign me! ^o~
by Seymour Guado July 18, 2013

The Urban Dictionary Mug

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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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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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

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

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