Three sisters ages 92, 94 and 96 live in a house together. One night the 96 year old draws a bath. She puts her foot in, pauses, and yells down the stairs, "Was I getting in or out of the bath?"

The 94 year old yells back, "I don't know, I'll come up and see." She starts up the steps and pauses, "Was I going up the stairs or down?"

The 92 year old is sitting at the kitchen table having tea listening to her sisters. Shaking her head she says, "I sure hope I never get that forgetful," and knocks on wood for good measure. She then yells, "I'll come up and help both of you as soon as I see who's at the door."