This is a typical riddle from where I come from. The answer is "I AM A NIGERIAN".. You will see choristers wear cooperate, especially SUIT to church on sundays... 
.. and on Monday morning, they are all dressed up in their senator attire (as we call it here) of the full AGBADA to go to work... 
....
Yea right....lol.....this is how we look like on Monday morning while going to work.....WE ARE TRUELY AFRICANS.