Following an especially angry argument, Mr. and Mrs. Smith went to bed not speaking to each other.
Needing to arise early the following morning, Mr. Smith left a note on his
wife's bedside table that said "Wake me at six."
An exasperated Mr. Smith awoke at ten the following morning and rolled
stiffly out of bed to see a note on his bedside table:
"It's 6:00 AM, you bum! Get out of bed!"