An 80-year-old couple is having trouble remembering things, so they go to see their doctor to make sure there's nothing wrong.
After an exam, the doctor says, "You're physically okay, but you guys might want to start writing notes to help you remember things."
That night they're watching TV when the old man gets up from his chair.
His wife says, "Where are you going?"
He says, "To the kitchen."
She says, "Will you get me some vanilla ice cream?"
He says, "All right."
She says, "Don't you think you should write it down?"
He says, "I don't have to write it down...vanilla ice cream."
She says, "Could I have strawberries and whip cream?"
He says, "All right."
She says, "Don't you think you should write it down?"
He says, "I don't have to write it down...vanilla ice cream with strawberries and whipped cream."
Twenty minutes later he walks in and hands her a plate of bacon and eggs.
She says, "You forgot my fucking toast."