Top Definition
The mental attraction between two people that culminates in conversation/conversations of mutual fulfilment.
When two people understand eachother on a fundamental level intellectually, which provides mental stimulation to both parties in the form of brainal sex.
I really like that girl, I think she's so intelligent and interresting, whenever we are talking I feel as though we are having brainal sex!
by Moo Lavaca October 26, 2010

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