Joy couldn't help it- she was becoming increasingly aroused. She knew the signs of her own arousal; the beating of her heart, the fluttering feeling in her stomach, the hardening of her nipples. She glanced around, noticing that it seemed EVERYONE was experiencing the same thing. All of the other patrons of the show had somewhat paired off, now kissing each other, embracing tightly. All except for herself and her sister, that was. For a brief second, Joy and Julie's eyes met, and Joy could see the arousal on her sister's face. For a moment, she contemplated what it would be like to kiss her sister, to touch her breasts..to...NO! Revulsion coursed through her; this was her SISTER, her TWIN! But her arousal was strong, and Joy could feel her will wearing down. She could feel a tangible NEED to be with someone right now. Not necessarily to have sex, but to at least scratch this sudden (and presumably hormonal) itch.
Then both of their eyes settled on the clown girl. Joy saw she was watching them with great interest, her nipples clearly rock hard through the thin fabric of the bikini she wore. The clown girl licked her lips in an almost carnivorous way, sitting down in front of them, smiling broadly.