Corgi Complex
When a small person believes they are bigger and stronger than they actually are. Often found in small children with attitude problems or short men. Also sometimes known as Napoleon Syndrome.
Person 1: hey, Lizzie's 10-year-old just tried to beat me up when I teased him.
Person 2: oh yeah, he has a corgi complex.
Person 2: oh yeah, he has a corgi complex.