Késő esti vicc angolul

A visitor to a mental institution asks the director how they decided which patients should be kept in.
The director replies, "We fill up a bath, then offer the patient a teaspoon, teacup or a bucket and ask them to empty the bathtub."
The visitor then says, "Oh, I see - a normal person would chose the bucket because it's the biggest."
The director responds, "No, a normal person would pull the fucking plug out. Would you like a bed near the window?"