When someone does something weird or unexpected that is either slightly cruel or kinda cool but still weird. Can also be said if you want to say something that rolls off the tongue.
Person 1: Hey howd you do on that pop quiz?
Person 2: Man, terrible. That was kinda freaky deaky dontcha think?
Person 1: Yeah, it definitely was.
Person 1: Do you see that face she made? That was weird.
Person 2: Haha I thought it was freaky deaky personally.