Give them a mini-show.

"If I can prove you wrong, you owe me," Amanda explains. "I'll show you magic."

The short one shrugs. "Why would we owe you something?"

"Your friend is hot as hell," the taller one says. "I think I can see her--"

Amanda leans in close and whispers to them. "How about this? If I can use my amazing abilities to get her topless for you, each of you gives me ten bucks. Completely topless. Full on titties. See them barely hanging in there? I guarantee I can do it."

Suddenly, they seem incredibly interested. "Yeah right," the pudgy one says. "As if you could do that."

"But if I do it, you owe me that money. Deal?"

The three look between each other, and after a moment longer, they nod in agreement.

Amanda then turns back to Mack with a smile. "Sorry about that. Just needed to tell my friends something!"

"No problem. Who are they?"

"Just some people. Anyway, can you do something for me really quick? I want to show them just what a true magician can do, so be my assistant. All you need to do is look pretty, so it'll be fine."

With her no longer caring to worry about her wardrobe, Amanda starts to wonder if they'll pop out on their own. But she pulls a deck of cards from her pocket and pulls them from the box and begins to shuffle. The boys look confused. After she finishes, she spreads the entire deck out in her hands and points it towards them.

"Pick a card. One of you," Amanda explains. "Grab it, look at it, and put it back."

The short one lifts one and does as he's instructed.

"We're getting played," the pudgy one says. "Aren't we?"

Amanda happily shuffles the deck again. Then, she spread the cards out to Mackenzie this time. "Now, my dear assistant. You have no idea what card they picked, correct?"

Mackenzie shakes her head.

"Wonderful. Then pick a card. Just tap it with your finger." Just as her friend does so, she ends the sentence with, "Please."

Amanda takes said card and keeps it apart from the deck and turns back to the boys. She holds it up. Meanwhile, they aren't even looking at the result. Mackenzie behind them brings her hands up and clutched the bottom fabric of her top, and begins pulling it up off her body. Her tits drop, and she discards the crop top by tossing it into the fountain nearby--an unexpected addition.

"Is this your card?" Amanda asks with a wink.

The jaws of the boys practically drop to the stone beneath them. Mackenzie stands there with nothing but a tiny skirt. Her tits are completely uncovered, and she doesn't seem to care at all.

"Y-Yeah," the pudgy boy lies. "Totally is, yeah."