whudupdoe
It virtually means: what's going on, how are you doing, what's happening, etc...it is a saying that is Born, Bred and Said by most Detroit Natives.(may also be spelled, "What Up Doe")
The man walked into the store and as he passed a young man that was leaving out and he said to him, Whudupdoe? The young man said the same in return. A simple greeting of affection and acknowledgment of people you pass, meet or greet!