Retigga

A nigga who does some retarded shit and thinks it's funny even though it isn't so now they just look retarded

(Eli and JJ are friends in this example)

Eli: "Aye JJ did you see that retigga outside last night??"

JJ: "yeah, he thought he was real funny doing that shit"

Stigga

A stankin' ass nigga that refuses to wash they ass no matter the situation

"ewww stigga I can smell you from here, do you ever even wash your ass??"