Living in an upper-middle class whtie community, Alex hadn't been exposed to the opportunity of dating minority woman that he would have liked. He was deeply intrigued by non-white woman, and he was going to take the opportunity to experience a minority to his hearts delight.
"Amanda," he said, "You'll notice that your skin is becoming much more yellow in tone, and your hair, well, your hair is becoming long and black."
Amanda grabbed her hair and looked at it as it changed colors from brown to black in her hand which she watched change from white to yellow.
"W-what are you doing to me?" she asked.
"Oh, you'll see. In fact," he continued, "This next change will give it away. You'll now notice that your eyes are changing, in fact, your entire face is changing into that of a drop-dead gorgeous Asian woman."
Amanda began feeling pain on her face as her nose flattened out, becoming smaller, her mouth getting smaller, and her vision adjusted slightly as she felt pain around her eyes, causing them to become much more slanted.
"An asain?" she asked. "That's all?"
"Oh, I'm not done." said Alex, before continuing with her transformation. "Now you'll notice that your legs are getting slightly longer, much more slender, and oh so silky smooth, just like the rest of your skin. Your skin is also becoming tremendously sensitive to the touch."
Amanda gasped as she noticed these changes.
"Your hips and ass," continued Alex, "are also changing. They're becoming much wider, and your ass is an incredible sight. It's an ass that as soon as any guy looks at it, they'll want to fuck you in a heartbeat."
Amanda's hips cracked and she put her hands on her ass. "I can feel it growing" she said. And it was true. The others stared as they watched her ass growing beneath her hands, straining her running shorts, thankfully, she had worn spandex which were stretching as her ass continued growing.
"And last but not least," said Alex, "Your breasts are now doubling in size."
Amanda's hands immediately shot up to her chest as she felt her breasts swell from their B-Cup size to a little larger than a D-cup. "They feel so heavy." she said as she held them in her small hands. "Are you done yet?"
"Oh no my dear," Alex said with a grin, "In fact, your breasts aren't even done growing yet, as they're now doubling in size from where they're at now. Don't worry, your body will be able to handle their size, although not without a little pain."
Amanda's already giant breasts began to swell beneath her hands, which now began struggling to hold up her giant chest. It now looked as though Amanda had basketballs hanging off of her chest. She was beyond uncomfortable in her clothes, and in severe pain.
"I'm sure your clothing is now hurting you," said Alex, with mock sympathy in his voice, "and so your clothes are now transforming into a skirt that is barely long enough to cover your ass, and a bikini top that barely covers your new, giant nipples that are large even in proportion to your tits."
Everyone else gasped as Amanda's clothes pulled up into exactly what Alex had described. Amanda however, was too busy moaning in pleasure as she felt her nipples and aeroeas grew to a large size, and everyone could see them jutting up through the small amount of thin fabric barely covering them as the bikini top.
"You're such a typical guy. I will so get you back for this when I get the chance." said Amanda.
"I know," Alex said, "which is why I'm going to make sure that I get to enjoy this while I have the chance. Because one of the things about the medallion is that no one notices the changes except those involved in the bet. So, until tomorrow, when all of this expires and we go running again, you are going to be in mind, an absolute bimbo, with nothing on your mind except pleasing me in every way possible, but especially sexually. You'll be able to feel your intelligence slipping away...now."
"You bastard." said Amanda, before she began to feel a cloud descend on her mind and her intelligence slipping away. She emitted a giggle, walked over to Alex, and began sucking on his neck, trying to get him to play with her, and everyone knew her transformation was complete.
"How could you do that to her?" asked Maddi.
"Hey look, I get a day of fun, is that so bad?" he replied. "Besides, did you forget, I still get to transform the two of you...and you're next."
Maddi looked fearful as she realized that he was right.