A phrase utter by people who don't know what they're talking about, when they are mad at someone. Often used by black men with speech impediments when talking to football players.
When the left tackle messed up on the 22 iso, the coach said "Whadja do wrong that time?"
"Whaddafah" as in "What the fuck?" said rather quickly and in a hurry. This was coined after a year of living in student accomodation, with many shocking things going on.
TeKK: Oh my god this char is so kawaiiii!
Stanto: Whaddafah!?!
TeKK: This game character, looks cute... dude.
Stanto: Err, okay.