"I was going to ask you to take me to the mall because I need new bathing shorts. But I'd invited my friends to a pool party in an hour." Gael smiled. "So, can you become my bathing shorts? I promise I won't piss on you!"
"A pool party? But mom and dad are on a trip until tomorrow." Jeff said. "If I turn into a piece of clothing you and your friends will be unsupervised."
"Two birds one stone!" Gael winked while he smiled mischievously. "Don't worry, Jeff. I have just invited Ralph, Loki and Oliver."
"Those are a threat. I cannot leave you all by your own." Jeff was already regretting his offer. "Maybe we should use the Chronivac tomorrow..."
"But Jeff, you already said you trust me!" Gael shouted. "We will act like mature boys. No pranks or anything stupid, I promise!" Jeff thought about it for a moment until he agreed. He sighed and started to type on his computer.
"Fine, I'll be your bathing shorts but only during your party." Jeff said while he kept typing, he can feel his little brother's big smile behind him. He still wasn't sure of leaving him by his own, so while he looked through the Chronivac options he found out that he can do a lot more than just turning himself into clothing.
"Gael thinks I'm so naive, but he'll be the one surprised this time." Jeff thought while he sets the parameters of his transformation. He is going to become a regular pair of black swimming trunks but the twist is going to be that when someone wears him. He will gradually turn into a skimpy black speedo.
In order to don't be noticeable, Jeff is also going to alter the wearer's mind. Their sight is going to blur to any object underwater. After a brief moment, the swimming trunks' effect is going to be contagious via water to any close bathing shorts, except for the blur thing.
"This program can do everything!" Jeff thought while his little brother waited very excitedly from behind. What Gael didn't know was that Jeff was making more things than just setting his transformation to bathing shorts. Jeff was still worried about leaving Gael and his friends without proper supervision. So, he got an interesting idea.