So stupid, can't spell supid.

to be more stupid than stupid
super+stupid=supid

a playful way of saying stupid to a friend

Supid is an acronym for Sucking. Urgently. Passively . In your Friends. Dad

Legitimately, it is the right way to spell stupidity as this was widely used by the Nazi Jews, Muslim Monks, and frankly any other oxymoron I can think of like that.