A travelling salesman is going through the country when his car breaks down. He goes to a nearby farmhouse and asks to use the phone.
The farmer tells him, “We ain’t got a phone, but I’m headin’ into town tomorrow an’ you kin spend the night here. O’ course you’ll have to sleep in the same bed as my three sons, here.”
And the salesman says, “Wait a minute. I’m in the wrong joke.”