Top Definition
A holiday for all non-fathers around the world to celebrate being not a father. To celebrate that moment of happiness when your one-night stand says, "I'm not pregnant!"
First Lady: I'm not pregnant!
President: YES, I declare today NOT A FATHER'S DAY! Hooray!!!
by Blackflame619 January 13, 2009

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Not A Father's Day is a holiday dedicated to the celebration and commemoration of an often forgotten segment of our country's population: the not fathers. These brave men have chosen to remain childless, despite an avalanche of pressure, expectations, and condemnation, propagated by the Saturday morning cartoon loving elite, the Minivan Clan, and Maury Povich.
Guy #1: Happy "Not A Father's Day", the only thing I'll be nursing at any given 2 AM, is a Scotch!

Guy #2: Amen to that!
by arcadiageorge June 16, 2014

The Urban Dictionary Mug

Lotsa space for your liquids.

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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