An 80 year old couple was worried because they kept forgetting things all the time. The doctor assured them there was nothing seriously wrong except old age, and suggested the simply carry a pocket notebook and write things down so as not to forget. Several days later the old man got up to go to the kitchen. His wife said, "Dear, get me a bowl of ice cream while you're up." He says, "OK." She says, "... and put some chocolate syrup on it. You'd better write that down." He says, "I won't forget." She says", and put a few cherries on it, too. You'd better write all this down." He says, "I won't forget." He comes back in twenty minutes and hands her a plate of scrambled eggs and bacon. She says, "Dam it, I told you to write it down. I knew you'd forget." He says, "What did I forget?" She says, "My toast!"