Three Sisters

Three sisters ,aged 92.94 and 96,lived together.One night the 96-year old prepared a bath she puts one foot in and pauses.She was getting in the bath or out and she shouted.The 94-year old shouted back "I don't,know,I'll come up to see what' up". She started going up the stairs and stopped. She shouted "Was I going up or down?" The 92-year old was sitting at the kitchen table having tea listening to her sisters. She shook her head and said,"I hope I never get that forgetfull and knocks on wood". Then she shouted,"I'll come up and help both of you as soon I see who's at the door".