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 and pauses. she 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 stairs 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. she shakes her head and says, "i sure hope i never get that forgetful." she 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."