1. Where are you going to?
2. Where are you heading to?
Joe, where you dey go this night?
Joe, where are you going to this night?
It means 'the reason is'.
The man slap am sake of say him steal wrist watch.
I no fit tolerate am sake of say him na my guy.
["Reason", " Because"]
Origin: Port Harcourt
Where you dey go?