The fruit looked like an ordinary plum, in terms of shape and size. In terms of color it was anything but ordinary, instead of the normal deep purple of a plum it was pale pink.
"What is it?" Kyle asked.
Following through with his dare Luke took a bite. It tasted like an ordinary plum, "I think it's just a plum, but my sister probably did some freaky experiment to it so that it went a funny color."
Luke finished it because he figured that was the best way to hide the evidence that he had been messing with his sister's experiment.
Afterwards he and his friends lost interest in playing truth or dare so they all played videogames until they had to go home.
When they had all left and it was just himself and Tiff in the house Tiff took over the kitchen working on her weird fruit experiment. When he went in there to get a soda she glared at him.
"I don't want you going anywhere near these fruits," she scolded him, "It's very important."
"Yeah, yeah, whatever," Luke couldn't care less about what Tiff was doing and started to leave the kitchen, soft drink in hand.
"So important I won't have time for much else so could you empty the dryer and sort the clothes?"
So that was what she had been getting at. Luke rolled his eyes but decided to do as she had asked to avoid a fight. When she got really into an experiment Tiff could be a real jerk and Luke had learned better than to antagonize her.
Of course the clothing he had to sort would be underwear, and mostly Tiff's which made things worse. He always hated having to sort them apart from the rest of the clothing because it made him feel so stupid to know what his sister wore under her clothes. This time though he had an idea for revenge. He would take one of her bras and a few pairs of panties. He wasn't sure what he would do with them, but he had some ideas about scattering them throughout the school, or maybe giving them to her boyfriend. Smiling he took his boxers, as well as the stolen bra and panties back to his room.
In his room an odd idea came to him, that it might be fun to try on Tiff's bra and panties, then he could put them back with the rest of her underwear, knowing that sooner or later she would end up putting them on. If she knew she would probably end up disgusted.
Luke quickly stripped down. He decided to start with the panties since he wasn't too sure about how to manage putting on the bra.
The panties were tight on him, and bulged in the front, struggling to contain anatomy that they were never intended to hold, but he was amazed by how it felt to wear them, so natural and comfortable, far better than boxers. The material they were made of was so soft and silky that he suddenly understood perfectly why girls wore so many different styles of underwear. If he had known how good it felt to wear panties he would have tired a long time ago.
Now he was excited to see how it would feel to wear a bra.
To his delight it turned out to be far easier to put it on than he had thought. It was rather tight across his shoulders, but he thought that it looked somehow right. The only thing wrong with about it was how empty it looked on his flat chest. Well, there was one way to fix that. Grabbing a pair of socks he stuffed them into the empty cups of the bra, adjusting and shaping them until the bra was properly filled. To complete the illusion he put his shirt back on.
Luke stood in his room wearing nothing but a shirt and panties, running his hands over his pretend breasts. He loved the way he looked with breasts that he couldn't help but wish that he had a real pair. He envied his sister for being able to wear bras and panties and having breasts..
Sighing he took the socks out and took off the bra, only to realize that he felt naked without it. Not having in across his chest felt strange, like he was forgetting something, so he left it on and put his pants back on over the panties.
With nothing else to do until dinner was ready he sat down at his desk to do homework.
A few minutes later he had completely forgotten that he was wearing his sister's bra and panties.