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 they carry a notebook and write things down so they wouldn't 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."
"Okay." he said.
"...and put some chocolate syrup on it and a few cherries on it, too." She added. "You'd better write all this down."
"I won't forget." He said. Twenty minutes later he came back into the room and handed her a plate of scrambled eggs and bacon.
She glared at him. "Now, I told you to write it down! I knew you'd forget."
"What did I forget?" He asked.

She replied, "My toast!"