The setting could be a cheap motel named the UN Suites and a sister with bright red hair, large boobs and loose fitting red cocktail dress could be seen sneaking into a room carrying a glass of champagne in one hand with a cigarette (unlit of course) in the other. She could have the letters WTS marked on her forehead.
As she closes the door behind her, you can hear her laughing loudly and moaning the words, "You're the beast and I can't get enough! You make me hot!".
OK, I've set up the premise, now let's see some of you more creative folks finish the drama for us. . .