Mutilation of the words "Can't" and "Fantasy".

Describes a fantasy that is just too plain weird for either party to fulfill.
girl: I will not participate in your sick Can'tasy!
by Clement Playford September 02, 2008

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Top Definition
A sex fantasy or act you would actually do except that current circumstances prevent it.
My wife won't ask her hot friend to join us in a threesome, so it shall remain my cantasy.
by coconut2010 May 07, 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