An Arab immigrant goes to a Doctor and says "I feel terrible."

The Doctor says "You need to pee and poop in a bucket for a week, throw in a dead fish and a rotting cabbage. Put a towel over your head and inhale the vapours for 3 days."

The man does this and goes back to the Doctor and says "I feel wonderful !!! What was wrong with me?"

The Doctor says "You were homesick."