"I Said That Syndrome" when a person kept repeating the same words that you just said like one second ago. very similar to echoe or parrot syndrome. it's super contagious and super annoying so beware because there is no cure for this disease.
"Dude, i almost choke the shit out of my co- worker this morning during our meeting because of her IST syndrome- she kept repeating what i just said like a dumb parrot."
by King Kamehameha III March 2, 2010