Top Definition
Stands for Possibility For Significant Other, a person whom you have a crush on, and you know has a crush on you, but you just haven't started dating yet.
A: Have you and C hooked up yet?
B: Naw, we're just P.F.S.O's right now.
by Joe Jockstrap November 09, 2005

The Urban Dictionary Mug

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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.

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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).

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