Top Definition
To do something or play a sport by cheating, being physically agressive and otherwise trying to win at all costs.
'Oh... oh I see. You playin' by prison rules huh? Ok my man, let's see how you handle my shit now!'
by Ray Babycakes July 20, 2006

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When men are in an enclosed environment for too long the urge to satisfy their carnal needs sometimes turn to taking a male partner to satiate their desire. Prison Rules dictate that the receiver is gay and the pitcher is straight.
Andy Dufresne: Yeah. The funny thing is - on the outside, I was an honest man, straight as an arrow.
Red: But that was before the incident in the laundry...according to prison rules you're a gay man now Andy.
by Colonel_Blimp December 26, 2016

The Urban Dictionary Mug

Lotsa space for your liquids.

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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.

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.

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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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After winning a contest of skills, a prisoner or an alpha male yells "Prison Rules, pussy" and then the loser of the contest becomes his prison bitch.
*Shamar beats Jayquan in an arm wrestling match* Shamar yells "Prison Rules, pussy!" And then shamar knows that he's getting fucking in those showers tonight.
by Lord McQuiad October 10, 2016

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