Dave has to be honest

"I have to admit that it's kinda... interesting."

"Interesting? No more than that?"

Dave blushed. "OK, it's a bit of a turn on?"

The stranger chuckled. "I knew you'd enjoy it Dave. But I think I can make it even more... interesting."

Dave hesitated. He was already restrained in this bar and aware of several people looking at him.

"Umm.. not sure about that?"

"Really? But we had a bet Dave. You're not going to back out so soon are you?"

Dave sighed. Damn. He needed that cash.

"OK, OK. What next?"

The man put two objects on the bar. One was a very wide leather collar with chrome D rings on it and two straps to secure it in place. The other was a red rubber ball gag on a leather head harness. To his surprise, he felt his cock lurch with excitement.

"Ready?" Dave nodded and before he could change his mind, the stranger picked up the head harness and wrapped the leather straps around Dave's head. Wait a second? How was he going to say he wanted to stop. Dave opened his mouth to speak and the stranger pushed the red rubber ball inside and then expertly tightened the straps. Adding padlocks again, he stepped back.

"Nice." Dave grunted at him angrily, trying to speak but unable to. His hands tried to reach upwards, but were restrained tightly in place. He barely registered as the stranger picked up the posture collar.

"Hold still, Dave." The man shoved the collar against Dave's muscled neck and then strapped it tightly on. Dave found his chin **** upwards and his mouth was pushed tightly closed around the gag. The only sound he could now make was a whimper. As the inevitable padlocks clicked into place, he realised how trapped he was. And yet, his cock was now rock hard.