One fucked up motherfucker from South Park. He is the teacher of Stan, Kyle, Cartman and Kenny. He was gay as a male, and later, when he turns into a women via sex change, he becomes a lesbian. He's just gay no matter what sex he turns into. It's a fucking shitstorm. He also used to be obsessed with puppets. Mr. Hat was his original puppet lover, but he was replaced with Mr. Stick. Who knows what the hell Mr. Garrison did with those puppets. He's had relations with Big Gay Al, Mr. Slave, and guys he's somehow fooled into thinking he is a woman. Mr. Garrison created the Gay Tranny Paradox. If a gay man turns into a woman and becomes a "lesbian" is he gay or straight? I don't fucking know.
A tradition among the gay community that certain slurs, ordinarily offensive, are more acceptable when used among gay men themselves, named after the South Park character Herbert Garrison.
Jimbo: "Well that's not fair, I should be able to say fag."
Randy Marsh: "Hey, you didn't get bleeped."
Jimbo: "Uh-oh."
Mr. Garrison: "Well well well, guess we learned something new about you, Jimbo, you freaking fag. You want to make out or something?"
Some other dude at the bar, likely: "Today I learned about the Mr. Garrison Rule."
When a man realizes or finds out during mid sex that woman he is having sex with is not really a woman and in fact is a man who had a sex change operation. Like that one episode of South Park.
"Dude did you hear Joey got Mr.Garrisoned by some "chick" at the club?! He found out halfway during sex that "she" was a he!"
Mr. Garrisoned - def. Realizing halfway through intercourse that the woman you are with is a man