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 rapperKanye 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."
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi