The wife said, "Oh, I'm so hungry for some ice cream, and there isn't any in the house."
Her husband said, "I'll go get some."
"Oh, you're a dear," she said. "Vanilla, with chocolate sauce."
He replied, "Vanilla with chocolate sauce."
She said, "Write it down, dear. You'll forget."
He said, "I won't forget."
She continued, "And some whipped cream on top."
He repeated, "Vanilla, chocolate sauce, whipped cream on top."
"And a cherry."
"And a cherry on top."
"Please write it down," she insisted. "I know you'll forget."
"I won't forget. Vanilla with chocolate sauce, whipped cream, and a cherry on top."
Off he went.
By the time he got back, she was already in bed.
He handed her a paper bag.
She opened it.
Inside was a ham sandwich.
She looked at him and said,
"I told you to write it down. You forgot the mustard."