The Retardicus Phenomena
when its normal for someone to be so fucking stupid you think they are actually a fucking retard. The stuff they do follows the normal traits of the average retard but is also completely normal for them to do. Acts they may perform can include screaming, moaning, groaning, and uncontrollable flailing of random limbs.
bro, He is so stupid I think this might be a rare occurrence of the Retardicus Phenomena