He grinned. He had plugged the tablet into his universal charger, and turned off sleep mode before going to bed. He smiled as he looked at Chad's profile. He needed to be a bit more dog-like.
Kyle yelped, and then covered his mouth. He felt a sudden bulge grow inside him. Chad's cock had knotted inside him. He stared up at the house, but did not see Tad behind the blinds in his darkened room staring back. He wondered how long he would be knotted. He didn't want Chad's parents to find them this way. They might call the cops or his parents? He sobbed softly trying to get Chad to go back inside with him. He wanted to go to Chad's room and lock the door. But Chad was perfectly happy where he was.
Kyle heard a strange swishing noise. Kyle looked over his shoulder. Chad now had a foot long tail growing from the base of his spine which he was happily wagging. It was covered with blond hair. Chad's naked skin was covered with stubble, and he seemed to be getting smaller, as he got hairier. His face contorted and his ears grew bigger and flopped over, and grew hairy. Chad was becoming a golden retriever. Hot liquid filled Kyle's belly. He gasped. Chad's cum seemed to be changing him.
He was sobbing and covered in sweat when Chad's knot finally shrank. The sky was grey. He hadn't heard anyone come out of the house.
"Put this on, Kyle," ordered a male voice.
Kyle looked up. Standing a foot from his head with Chad's kid brother Tad. He was holding Kyle's tablet, and grinning. Kyle looked over at the yellow nylon running shorts and sneakers lying on the grass, they were probably Chad's. Kyle stood up. His boxers were torn and around his ankles. He stepped out of them and reached for the nylon shorts. He paused. He was more muscular and a lot hairier than he had been.
"But the tablet can't work on me?" Kyle said uncertainly.
"It didn't, it worked on Chad and his cum. As he lost around 80 lbs, it had to go somewhere. Eighty pounds of cum was programmed to absorb into Chad's knotted victim, and become muscle, and hair, oh, and to make the mate totally submissive.
"Oh?" that did explain how Kyle was feeling.
He looked back at Tad. He licked his lips. Chad's kid brother was dressed for a run.
Tad smiled, "Okay, Kyle, you look hot with that broad hairy chest."
"Th-thanks?" Kyle said nervously. He desperately wanted Tad's approval.
"I think I'll keep you. Now go grab Chad's leash. We're going for a run in the park to pickup girls," Tad explained with a smile.
Kyle ran and caught Chad, and led the golden retriever back over to Tad. He looked a little hurt, he bit his lip, and whispered, "But you said I looked hot?"
"Oh, baby, you do. With you as my wingman, and a cute golden retriever, we're bound to attract some women. Tell you what, if I get lucky with any of them, I'll let you give me a blow job. Does that sound good?"
Kyle nodded his head emphatically.
Tad keyed Chad to recognize Tad's scent as his master's scent. Then he asked Kyle for his password, and after Kyle gave it, Tad reset the tablet with his own secret password. He climbed up in the old tree house, and stashed the tablet in the secret cubby that he and his brothers had built to store their treasures. Then he came back down, and led Kyle and Chad to the gate. The park was only a block away. The sun was up.
"Tad?" his mother called from the house as Kyle and Chad disappeared out the gate.
Tad shouted back, "Don't make breakfast for us. Chad, Kyle and I are going for a run. We'll get breakfast at Joe's."
Then he stepped out the gate, and closed it.
She hadn't seen Chad, but the black haired fellow was a lot bigger and buffer than she remembered Kyle being. Maybe it was because he had a baggy shirt on? Maybe it's because she had seen him next to Chad. She shrugged, and went to make breakfast for Brad, her husband, and herself.