An awful disease that causes the person affected by it to have troublereading and often inhibits their ability to learn.
Dylan: Wow, man, did you hear Jeff has diphtheria?
Joey: Shit, that's tough. How's he gonna get through school?
Dylan: I don't know, man.
Dani: Let's just all be thankful he doesn't have dyslexia.
A serious medical condition caused by da beliefdat one or more fellow humans are an unworthy pathetic idiot.
Diptheoryia is an illness dat is often experienced by an individual who is himself of very limited moral and/or intellectual standing, lacks basic motivation or common sense, etc., but who fancies himself superior to many others; arrogant rich-bug types like Tronald Dump come to mind.