He cums.

I couldn't help it. With an undignified squeal, fortunately muffled by the gag, I came. Cum sprayed out of a little hole at the top of the cocksleeve, all over both our stomachs. Less than five seconds later, with a whimper, Steve added his own cum to the mess.

"Well," Nikki said, "I guess this couch is ruined. Steve, there's a red bag on the sink in the bathroom -- the nice bathroom, not the small one -- that I want you to go and get. You may wash up, but don't take too long. Dave, stay right there. You know what'll happen if you move, and I'm sure you don't want that kind of, um, stimulation right now."

I stared up at the ceiling, trying to breathe. Post-nut clarity is a horrible thing, and it was just occurring to me how completely, royally fucked I was right then. When we got out of this, well, Steve and I could keep a secret to ourselves, but... but that was a thing that had just happened, actually happened. We'd never be able to look each other in the eyes again.

And I had no idea how we were going to get out of this. It was Friday night, but we had classes on Monday. What if...?

No, that wouldn't be an issue. Nikki was an uptight nerd, but she wasn't a psycho. This was just a housewarming prank gone WAY too far. She'd let us go soon.

Steve returned with the bag. Nikki pulled out a dildo that looked massive. I'm not great at sizes, but it was bigger than my cock, and I'm not small.

"Dave, lean over the back of the couch so I can get this in, okay?"

Hell no. I got up and backed away.

"Steve, if your test partner isn't over the back of that couch within one minute, I'm shocking you both into unconsciousness."

I don't blame Steve for grabbing me and dragging me over to the couch at that. I mean, it's basic survival, right? I would've done the same thing in the circumstances. There was no way to escape, so why make things harder than they had to be?

And the truth was, I didn't fight him nearly as hard as I could have. I mean, I had to fight, it was a pride thing, but I didn't relish the thought of her carrying out her threat, either. So I didn't do too much to actually prevent him from bending me over the couch.

He would've won, anyway. He was stronger than me.

"Good," Nikki said. "Now, try to relax." I felt something cold and wet hit my asshole, which made me do the exact opposite of relax. I tensed up as she used what I presumed to be the tip of the dildo to rub lube up and down my crack.

"You're really going to want to relax," she said, pressing it gently against my asshole. "I'm afraid I don't have any experience at this, and resistance might be painful."

I tried. Maybe it helped. All I know is that thing hurt like a bastard going in, and when I screamed into the gag, Steve screamed at the stimulation to his post-nut cock. Which overstimulated mine. Our cum, still all over my belly, slickened the back of the couch while Nikki's dildo poked roughly at my prostate, then kept going.

Finally, it was in; the girth decreased a little before the flare base and I felt my asshole relax as the stretch decreased.

"There. That wasn't so hard, right? Now sit on the couch, please. Both of you."

I sat on the couch. Nikki produced two small, wicked-looking clamps from the bag. Tiny hooks dangled from each.

"We won't use the weights today," she told me in what she clearly thought she was a reassuring manner. "We don't need those yet."

Yet?! I thought, as she closed the clamps around my nipples. They bit sharply; I gasped in sudden pain, and the movement of my mouth caused Steve whimper at the stimulation.

"There," Nikki said. "By the way, I'm instituting a new household bedtime. You boys are going to bed at 10pm; I'll remove your toys then. Until then, enjoy your football game."

Then, without another word, she went back to her computer.

I glanced at the clock. It was seven thirty.