How about they both meet a man and fight over him? They come to his place and change into sexy nighties (teddy bear nighties?). They catfight in his living room on the3 carpeted floor shredding the outfits in a real barn burner with hair pulling, scratching, slapping, slapping attacks, rolling around on the floor the works. The winner makes love to the man they fight over and the looser has to sit there and watch in humiliation.