"Say," said the smooth operator in a confidential tone to the host of the party, "there's a lot of hot babes at this party. If I find one that's ready to grab a quick one, would you mind if I use your extra bedroom?"
"What about your wife?"
"Oh, I won't be gone for a long time. She will never even miss me."
"No, I'm sure she won't miss you," smirked the host, "but fifteen minutes ago, she borrowed the extra bedroom!"