When I was there the term obruni was used a lot when I travelled, but other regional languages were different, I travelled to assess student teachers as part of my role.
''Hey you'' was a way of catching my attention when in the market [it happened once every three/four days and if you missed it you either went to Bawku or went hungry] in Pusiga, I spent two years there at the teacher training college as a VSO volunteer.
Had a friend know as Takoradi XXXX...he had some good stuff back then.