A standard of measurement with no basis in reality. The phrase derives from men who exaggerate the size of their penis.
I think I can fit in that parking spot.

Seriously? What, are you measuring in penis inches?
by rickbrunernyc August 06, 2009

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Top Definition
A fraction of an inch, because men often exaggerate the lengths of their members.

If, on average, a man with a five inch penis claims it's six inches long, then a penis inch is 5/6 of an inch.
The window is forty penis inches wide, but really it's only three feet.
by Johnny Rocker October 01, 2009

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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