Grizz getting captured in a sex dungeon

Grizz stepped into the dark doorway and walked through a dilapidated building.
"Hello? Is this the place the pizza party is at? Kinda weird being at the back of an alley...in an abandoned building...and being pretty late in the day, usually my parties are closer to lunch which give enough time fo–"
Grizz felt a sharp pain on the back of his skull before blacking out.
The dizziness Grizzly felt upon waking made him feel as if he was constantly falling, and the darkness did not help assuage this feeling. But after opening his eyes, and then trying to do so again, he soon began to panic.
"Ah! I can't see! I'm blind!"
"No you're not, you fat sod. You're blindfolded."
The biting voice only managed to make Grizz more anxious. Not only that, but he was beginning to realize he couldn't really move. Well, he could but it would only manage to swing his body; his limbs seemed to be held fast.
"Oho, you're pretty energetic for your size eh? Do you like the swing we got for ya?"
"I got the biggest one just like you said, Al!"
"Shut it! No names, you halfwit."

Grizz was getting very scared now. How many people were here? Why was he in some sort of swing with his arms and legs tied? Where was the pizza?
"Please help me out of this! I was suppose to meet up with some guys for pizza, I didn't want to be any trouble for anyone!" Grizz pleaded.
"Oh, no trouble at all" the biting voice, who Grizz remembered mentioned as Al, said sweetly, "we were going to have a fairly boring night before you came along."
"Yeah, yeah, yeah, boring; heh" the quick and slightly annoying voice spoke up.
It was at this point Grizzly's heart was racing. Although to say it was completely from fear would be a lie.
"Listen, I don't think my– mmrrfggl!?" Grizz had tried to start bargaining his way out of this predicament but was cut short as something was shoved into his maw.
"No, no; no listening for us. We don't need to waste any more time" Al said, "hope you like that bit of fun there. It's what the Yanks call a ring gag. Right Carv?"
"You said no names!"
"And I also said for you to get something to put up his bunghole but you didn't did you?"
"You didn't give me enough dosh for–"
"For fucks sake man, you could have swiped it while they were busy with the other stuff!"
Grizzly was too busy yelling at himself in his head to really hear what the other two were saying. He was in for a long night.