The term used when a person is acting up and can only say insults, much like that of a seventh grader
Person 1 (to a random stranger): WHY THE FUCK SHIT ARE YOU SO FAT!!!!
Person 2: Dude calm down you're getting a case of Sevy Syndrome
Person 1: YOUR MOTHER!!!!
Person 2: Dude calm down you're getting a case of Sevy Syndrome
Person 1: YOUR MOTHER!!!!
by BryceSmith April 12, 2011