"Now.. You need to make Matthew bent over, insert the vib and smack his ass till it's red. If not you both will suffer another punishment."
Matthew didn't even listen to this still trying to remember.

James turned red, and slowly poked Mathew on the arm. "Matt, matt, did you hear him?"

"Huh? Hear what?", he asked looking at James with surprise. "What did he say?"

He blushed, "He said you need to bend over and let me put a vibe in you."

"Fuck him. I won't bend anymore. I'm sick of this game", he said, looking at James.

James grinned, "You hear that. We arn't gonna listen to you anymore."

"As you wish", they heard and from the walls shoot two small darts, hitting both young men.

As James was waking he could feel something vibrating in his ass, just as Matthew did. When the would lower their pants he would see metal construction over their penises.
"Hello there, my little, rebelious pets. As you can see you have small present from me around your privates. Those sweet, little devices won't let you cum until I let you take it off. Vibrators in your nice holes.. they are nice, I've checked haha.. will vibrate constantly and they are on your prostate glands. You see the picture? So enjoy. I surely will~"
Matthew moaned reaching to his hole as the vibrations seemed to got bigger. He tried to pull it out but then could feel the bigger pressure inside his penis and then small electric shock run through the device, making Matthew cry out in pain.
Moving in James hole stayed on the same level as at the start.

James moaned loudly, "AHh," He cries, "So close, but can't cum," He whined.

As soon as James said that vibration in his ass became stronger.

He moaned loudly, "I'll do anything," He shouts, "Let me cum."