Definitions by QUACK*QUACK

Hiro Syndrome 

When a totally awesome male character in a book or show starts acting very asshole-ish because of a girl or woman.

"You're just being a jerk because of that stupid Haruhi."
"What, do I look like I have Hiro Syndrome?"

Hiro Syndrome by QUACK*QUACK November 18, 2009