The type of mentality and behavior exhibited by someone, usually a male, who has been locked up for most of their life. Such an individual will act like a bully and try to intimidate others in situations where it is completely unnecessary and or unwarranted. This is due to the aggressive and cutthroat predatory nature of prison life. They are always quick to fight others for no reason. A cat with prison mentality will always call out another man who he thinks is weak and call him a "bitch".
"I hate working with that nigga George. He makes this job feel like lock-up instead of a legit nine-to-five. But you can tell he spent most of his pathetic life in prison. Look at all his tats and he only has one eye. I hate these faggots with that prison mentality. Leave that shit behind the walls".
by Red_Eyes_High October 28, 2009

The art of mentally manipulating someone so badly that they can't even begin to think about having sex
Everything was fine until she told me she used to be a man, then I underwent a mental castration every time I seen her naked.my shit was softer than Spongebob.
by LandoThaJuggalo December 28, 2010

When your mind it invaded and then rape by words or images. Most of the time mental rape occurs while visting 4chan.
Oh my god i've been mental raped. prolcamied man 1
You visited 4chan didn't you. asked man 2
yes. said man 1
You visited 4chan didn't you. asked man 2
yes. said man 1
by buenol33t August 8, 2006

e.g. A bunch of hypocritical, two faced, cows who live in and around Solihull, West Midlands who gang up on one person with their "mob-mentality" to add pressure and change a event to suit their own agenda.
by G6-Star November 4, 2013

A person who attempts to stay inside the mind as in hearing voices because they feel that it makes them powerfull.Also called ligacrygist bipolar.
mental ligacrygist is not directly simplified to the general or common public it is replicated in science as a adoration,constitution.also known as clairvoyancy.
by regardless devon victory November 23, 2009

When a person thinks like a "guy," but is not a guy. The "spread your seed" mentality and way of life that is usually unconventional, or even unacceptable. Usually an adopted lifestyle by a young woman.
"Like, omg, Paris Hilton has total penis mentality, she's dated everyone, not that she cares to remember them. Just another notch on her..."
by gtrav January 22, 2009
