The blonde

You decide that instead of hitting the blonde, you'd have fun with her. Every time she closes her legs on that machine, she'll orgasm. She cannot stop using that machine until her legs are too weak to close it.

You watch the woman do a rep. She closes her legs then gasps. She looks around, and she sees you looking at her. She blushes and looks back at the mirror. She does another rep and has another orgasm. "Oh god," she mutters.

She will do this machine every time she works out, and forget it makes her orgasm. The machine will always have the same effect on her that it is having right now.

You spy on her as she keeps going and having more orgasm. Finally, her muscles are too tired to complete a rep, so she gets up. There is a big wet spot in her crotch. She looks at you, clamps her hands over her crotch and hurries to the women's locker room.