Shithead

A good ol' vine, from the good ol' times. Remember? :'(

-Teacher checking list nervously: uh-uh... Shithead?
-Student: IS SHA-THEED

achromatopsia

It's a type color blindness where you can't see any color, just black and white.

Guy1: Jerry has achromatopsia, he only sees black and white
Guy2: That's rad
Guy1: Just wait till he drives and gets into a traffic light... It's not so rad after all