Pizzashill's behavior there is just your typical short man syndrome. Alot of short males are deep down very angry, aggressive, insecure, emasculated, rage filled and unhappy people all because of their lack of stature, it dements and warps their fragile minds and causes them to lash out aggressively like how Pizza did, especially against tall(er) males, where the short male feeling emasculated, angry, threatened and insecure they thus then feel like they have something to prove..