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The disease that results from the contraction of the Staphylococcus Shigellosis microorganism. AKA Post-Gan Syndrome (PGS). It is caused by poo-to-mouth contact, and is commonly found in Chinese take-out joints all over Manhattan and sheisty Queens (see: Dougie's).

Today in the United States, it is commonly referred to as Klein's Disorder, after the famed early 21st Century amateur biologist, who first identified the microbe and the scourge associated with it- the hard way.

Ganitis is often accompanied by extreme diarrhea whose hallmark is a velevetty consistency with a hue that can range from khaki to deep purple. Generally, the bouquet of Ganitis, although very much present, varies widely and is as yet unpredictable. As a result, most modern healthcare professionals strongly prefer to ignore the aroma and instead rely heavily on the viscosity and shade of the poo when recommending a treatment.

Usually, treatment consists of bed rest and drinking plenty of fresh water to avoid dehydration. Dookage, however, remains the most important ritual of the recovery process. Many sufferers find that watching good television programs, like TCAP or Dog Whisperer, can ease the rehabilitation. Generally, one DOES NOT develop immunity after passing Ganitis. Many rookies, making this mistake, quickly learn that if you are ordering the Gan, Klein's should be considered a foregone conclusion.

Klein's is spread by contaminated water and food, and can cause the most severe dysentery because of its potent and deadly Shiga toxin.
Ariel: I have after-the-gan. Got it bad.

Me: Mother-of-Christ. It seems to be a classic case of Ganitis.
Ganitis by ehealth November 4, 2008
Related Words

gridmania gamitis 

Addiction to an internet grid game requiring no skillz. Involving mindless hours of clicking it manages somehow to suck you in. It rocks.
Paul and Matt have mad skillz but still have yet to beat me in Grid Game. They mos def have gridmania gamitis.
gridmania gamitis by Me Shell November 10, 2008
u just play fortnite so much u become a major virgin, a big enough one that u give up on going for girls, and settle down with going for guys as they are the only ones who will not sell or leave you on read
Friend 1: hey I just played so much Fort, I think I have a crush on my duo partner

Friend 2: u mean Jeff?

Friend 1: yeah...
Friend 2: that 100% gayitis
Gayitis by Bishop from Juice November 18, 2019

gayitism 

Literally me! It means to be above beyond gay!
Wow! I am so gayitism! owo
gayitism by HAHA NO March 13, 2019

big gameitis

choking when under the spotlight, typically sports or pimpin
John has big gameitis he bags all the ugly bitches, but he's a fucking moron when he tries to mack on a hottie
big gameitis by Paul S. W. November 8, 2006
Gayitis is someone that is good looking. They’re either gay, or at least has gay features (high pitched voice, hangs with gays but is straight).

If the looks are appealing to women, gay men, and straight men who don’t want to be gay (pretty much everyone ); That means that they have Gayitis

How to stop, or avoid Gayitis. Spread rumors that harms the infector. So that people can hate the infector as a person.

Stay around people that fit your preferences. If you like someone who has Gayitis, you’re just Gay.
Another, but inefficient way is to avoid talking to the infector.

Another use for Gayitis is to insult someone as a joke.

Try using the first definition like “Wow he ACTUALLY has Gayitis” so not to confuse the 2 definitions.
“Wow that guy looks so good, I’m not gay but damn”

“He looks good, but I don’t swing that way

“Damn everyone thinks he looks good, I agree but I’m not gay

“Last one to there has Gayitis!”

“If you don’t do it, you have Gayitis”
Gayitis by Migleadon March 26, 2022