I think it would be hilarious if Charlie's test results from the college show hes retarded

A surprising twist when all the fans believe the professors think he is some kind of genius or maybe Charlie believes that too, but they send him some mail of his test results and it turns out hes retarded 😆.

Then we get the classic joke from the gang where everyone already knows that and Charlie is surprised, like when Mac didnt realize the gang knew he was gay.