Sisyphean Intelligence

when intelligence is a Sisyphean task.

If someone has Sisyphean Intelligence any intelligent thought will metaphorically roll back down right before being formed. It does not matter how hard they try, someone with Sisyphean intelligence will always seem as if cursed by the gods into stupidity.

Person 1: that guy is an absolute idiot
Person 2: nah, he is simply a man of Sisyphean intelligence