They refuse - and also decide to make Mackenzie regret intervening

(chapter originally by bluefish49 at writing.com)

A round of derisive giggles swept through the assembled women, which Sarah hushed with a raise hand. Looking Mackenzie up and down with a calculating expression on her face, she said, "Hmm. Interesting proposal, but I have an alternative one."

"No alternatives," said Mackenzie, folding her arms. "Fun's fun, but if I let you strip her like this I could get fired. So give her something to wear, or else."

"Ooh! Wouldn't want to risk 'or else' from some lifeguard!" This got a laugh from everyone, making Mackenzie flush. "Fine, fine, I'll let her have something to wear. You know. Kind of."

Angie, still covering her breasts with one arm while holding up her bottoms with the other, looked momentarily relieved, until Sarah reached over and, with a casual yank, pulled her bikini bottoms clean off of her body.

Angie screamed and the crowd laughed as Sarah immediately threw her bikini bottoms as far away as she could. Mackenzie had to suppress a laugh herself, reminding herself that her job could well be at stake. "Hey! I said give her a-"

"Hey Angie," interrupted Sarah, pointing a finger at Mackenzie and speaking loudly enough for the whole pool to hear. "If you can take her swimsuit, you can have it."

There was a moment of pure silence as Angie and Mackenzie locked eyes, with silent comprehension passing between them. Even the crowd stopped laughing, watching with rapt attention.

Then Angie lunged out of the pool straight at Mackenzie.