there were two old ladies, Ethel and Elsie, who lived in an old house.

One evening, Ethel, who was upstairs in the bathroom, called down to Elsie - "Elsie, can you help me up here with the bath? I can't remeber whether I'm just about to get into the bath, or just about to get out of the bath."

Elsie called patiently from downstairs - "Just a minute, I'll be right up." as Elsie walked up the stairs, she thought to herself "thank goodness I'm not as bad as that yet, touch wood".
Then she called out to Ethel - just a minute - I'll just see who's at the front door...