Nate was half hard and happy as he rode the bus to the Athletic Supply Store. Jeff was totally freaking out because he felt so warm and happy being his kid bro's jockstrap. It was so wrong but it felt so right. He'd given up trying to communicate after the 6th load Nate pumped into him. Every time he tried to speak since his mouth was filled was crusty and gummy cum, the words were muffled and unintelligible. Worse yet, Nate thought Jeff was begging for more cum each time he made a sound.
It wasn't until Nate picked out his new jockstrap that Jeff fully understood his plan. Then Jeff realized that Nate meant to keep wearing Jeff, and to pretend that the new jockstrap was Jeff. Then mother wouldn't worry thought Nate.
Of course, she will worry. She'll think she did something wrong, and now I'm stuck as a jockstrap, was what Jeff wanted to communicate. But what Nate heard was "oodksluhslluhuhlltid..."
Nate patted his crotch and thought softly at Jeff. "My you're a hungry jeffstrap. No worries, I'll feed you as soon as I buy this, and some craft glue."
Fifteen minutes later, Nate's track pants hung on the back of a toilet stall door in the mall men's room. Jeff was tented by Nate's erection, as Nate squeezed off yet another load of cum. Jeff protested vigorously, but Nate took it as request for more. Somehow or other he managed to oblige. Nate commented that his sex drive had more than doubled since he put Jeff on.
He rolled down his strap to his ankles as he sat on the commode. He began tugging and pulling at a tag on the inside back of the strap. Jeff had been aware of it before but there was an iron on name tag affixed to him identifying him as Jeff. Nate was peeling away Jeff's identity as he freed the tag. Then Nate took the craft glue and the new jockstrap and attached the tag to the back inside band of the new jockstrap. Jeff had a hollow feeling of foreboding.
Nate pressed the strap between his knees to help seal the tag in place. Then he took Jeffstrap off and stretched him across his knees. He took a laundry marker out and on the top two thirds of the back of the strap where Jeff's name tag had been he printed in big block letters "NATE'S". Then underneath it in all small lowercase letters Nate wrote "jeffstrap".
Then he put the jeffstrap back on and put the new jockstrap over it, flushed the toilet and jogged the rest of the way home. He worked up a nice sweat along the way.
When got home, his mother asked for his dirty clothes including the jockstrap to wash. He gave her his gym bag, stepped into the downstairs bath, and removed the new jockstrap. Then he redressed. Their mother took the new warm jockstrap, noted Jeff's name tag inside, and satisfied everything was going to plan tossed the strap in the washing machine.
Upstairs in Jeff's room, Nate studied the Chronovac. It now read Subject 1A was being worn by Nate, and subject 1B was in the laundry room. Nate grinned.
Nate now planned to try to transform the jockstrap into a copy of Jeff. Then Nate would be free to wear Jeffstrap 24/7 for the next 6 months or so.
"Thwuh!" Shouted Jeff.
"Three?" Nate asked, he understood Jeff.
"Yuth!" Jeff felt triumph as he shouted.
Nate was now on Jeff's bed jerking on his pouch. "I'll try yanking off 3 loads, Jeff."
"Ngh!"
Nate was already hard. Jeff gagged.