Three elderly sisters lived together in the same house.
One evening one of them was getting ready to take a bath, put one foot in the water, stopped and shouted at the others:
- Hey, was I going into the bathroom now or was I leaving?
One of the other two sisters on the ground floor answers:
- I don't know, wait, I'm going up now to see.
He starts to climb the stairs, but halfway he stops and asks:
- Hey, should I go up the stairs now or down them?
The third one says to herself "God, what have you both done" and knocks on the wood three times. Then, out loud:
- Wait until I see who's at the door and then I'll come to help you...