Jason's Syndrome 

A medical condition that occurs due to excessive inbreeding. Symptoms include lower distended jaw, mouth breathing, poor vision, and gender dysphoria.

The player in the 2022 New Jersey Special Olympics has Jason's Syndrome and is a hero.

Jason's Syndrome by nut ass c/o September 25, 2022

Jason syndrome 

A person that has friends but doesnt play with them. Will soon loose contact and be by himself.

Kenneth has friends but rather play something else. Its called Jason syndrome.

Jason syndrome by Timmii July 1, 2018

Jason Derülo Syndrome 

Jason Derülo (n) Syndrome: A person with a very large ego. Someone who thinks he/she is 'larger-than-life'.

It is commonly believed that rapper Kanye West has the "Jason Derülo Syndrome", and that he was partly cured by his appearance on the TV show SouthPark.

Person 1: "I am the next Michael Jackson. I'm the next Gandhi. I'm the next Jesus Christ."

Person 2: "Damn, you're being a Jason Derülo.", or, "I think you have Jason Derülo Syndrome."

Jason Derülo Syndrome by Quebuciosos28 September 14, 2010