prison rules 

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!'

prison rules by Ray Babycakes July 20, 2006

prison rules 

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.

prison rules by Colonel_Blimp December 26, 2016

Prison Rules 

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.

Prison Rules by Lord McQuiad October 10, 2016

Prison rules 

The philosophy that if you don’t fight, people will just keep fucking with you; An environment, such as a school or work place, where there is little to no supervision, rules aren’t regularly enforced, and/or the only way you get people to leave you alone is by standing up for yourself.

Around here, it’s prison rules.

Prison rules by SiL3Nt J September 13, 2023

Prison City Rules 

In small press publishing that's code:

No erotic content, but other than that NO HOLDS BARRED

The Ethereal Gazette was noted for it's STRICT house rules rivaling the mentality of the Duggar household but aspects that differ as he defined to another who was doing anthologies, another editor knew the rules he coined -- other publishing imprints know this as Prison City Rules. No erotic content but no holds barred. Rule out sexual content but time the swearing, go for subject matter that's ideologically sensitive and able to address social issues when pulling this off. The Issue Five roster embodied the Prison City Rules approach.

Prison City Rules by illinoishorrorman June 8, 2018