Retard Strength is natures way of making up for the lack of brains in a particularly stupid individual. It often does not have visual appearance, but nevertheless, retards tend to have super-human strength. Retard strength is found in half-retards as well as full blown speds.
Guy 1- Holy shit Aurrichio! How are you so strong?!?
Guy 2- Dude, don't mess with that jackwagon. He has retard strength.