When a Navy sailor first boarded ship and found his new duty section, the chief said:"this is pretty good duty sailor, we take smoke breaks over there, you sit in this nice comfortable chair during work, and every day except Tuesday, you can go over to that can and stick your weiner in the hole and get a BJ"
"Wow!" said the new sailor, "but how come I can't get a BJ on Tuesday?"
The cheif replied:"because Tuesday is YOUR day in the can"