Top Definition
the communion or penetration of one's mind into or with another's mind, can often be akin to thinking of one another in a "sexual" way to some greater or lesser extent-- or just taking in the push and pull of one another in the form of thought tag.
When she picked up a carrot, he winked his eye-- engaging in mental sex while discussing the price of tea in China at the restaurant.
by mmm August 22, 2003

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mind games
Kelly just enjoys the mental sex. She loves to screw with your head.
by Chas April 19, 2003

The Urban Dictionary Mug

Lotsa space for your liquids.

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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.

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.

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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).

Buy the t-shirt
two people thinking of having sex with each other.
1: whoah, you could cut the sexual tension between them with a knife
2: they're so having mental sex
by itoldyouiwoulddoitromyyouoweme December 09, 2008

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

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