Retardedly strong

To posses the same retard power you remembered watching the retarded retard in grammar school had. He would fight 3 adults in such a manner, one would wonder where this unknown power came from. Likewise, its gaining this power from hitting the gym hard.

Nate: Hey dude, wanna go grab some burgers?
Jay: Naw kid, I'm busy getting that retard strength.

Nate: you been gettin retardedly strong lately.