Borrowing a Cow

A man once wanted to borrow a cow from a wealthy man, so he had his servant
send a note to the wealthy man. 

The rich man, who was entertaining some guests, took the note and ashamed to
be taken as an illiterate, pretended to be able to read it. When reading it
he nodded his head repeatedly.

"I know," the rich man said to the messenger, "I'll go myself in a moment."