Joann spoke to Frank:
"Don't you think you should replace his ball gag with a more breathable one?"
"You're perfectly right. Always caring for people's comfort."
Frank came back with the glass of water, opened the lowest drawer and showed Harry a new ball gag.
"This one has plenty of holes in the ball, it's less efficient at silencing people but this room is soundproof so that's not a problem. But let me warn you, you have the right to plead of course, but any insult or request to untie you when I remove the ball gag to let you drink would be considered as a request for an immediate new lotion coating of your cock and balls."
Harry received the message and when Frank removed the gag only a few "Please" exited his mouth. After drinking the whole glass, he still tried something :
"Please I've learnt my lesson, don't ..."
But Frank gagged him with the new gag quickly, he didn't really try to resist, knowing it was futile and would only get him some pain.
Frank headed for the wall where all the frightening devices were stored. He grabbed one, showed it to Harry. It was made of leather, with some straps and several rings. The rings were held by a leather piece and were progressively getting tighter at the end.
"Time to add some jewelry to your cock my boy."
Harry's cock was now nearly limp after the intense burning effects of the lotion. Frank had not finished his sentence when Harry felt Joann very lightly caressing his cock with her fingernails. It hardened a bit.
"You were right, his skin is so smooth, it's really well moisturized!" she said, laughing.
Frank went between Harry's legs and grabbed his cock and balls, and began fastening the unknown (by Harry only) device. Harry was watching in the ceiling mirror. His cock went through the rings and the straps were tightened around the base of his cock and balls, holding it in place. The rings were not too tight but still constricted a bit his cock. He had no time to think, Frank spoke.
"I love chastity devices and Joann loves teasing and cum control games. We decided it would be nice to mix them. It's Joann's turn to enjoy your body. We noticed you were really aroused and that you need to learn to control your cock. Don't thank us, we're happy to help you.
You came here for a massage and to blow your load didn't you? I'm afraid that it's much too early to let you cum and this device should prevent it, but it's never too early for a good massage. She's really skilled, you should enjoy it. We have plenty of massage oils or lubes here, but for me nothing equals the sensual smell of the suntan oil you bought, we'll stick with it for the moment."
Joann grabbed the oil and went between Harry's legs. He heard her uncap the bottle and once again drops of oil were falling on his ... thighs. She began massaging his upper thighs making them shine even more than before. It did not take long for Harry to realize the purpose of the device strapped to his cock. Due to Joann's ministrations his cock began to expand, but when only half hard, it was getting painfully constricted by the rings.
Joann, "It's time to improve your education. Cum control is the art of deciding when somebody is allowed to cum or not. I'm said to be an expert at male edging, which consists of teasing him but always denying him the pleasure of releasing his seed. You're not done with riding this particular horse today."
Harry realized he now had to concentrate and keep his cock under control, it was getting really painful but It was not easy due to Joann's skilful and oily ministrations.
Frank had grabbed a camera and was taking some photos, sometimes getting very close to Harry's genitals.
Harry somewhat, to his surprise, kept a little control on his cock during his thighs massage, it was like fighting against his own traitorous cock, but his hope disappeared when she began oiling his ass crack and the skin between his legs. There was nothing he could do, her hand sliding there made him lose control, and he felt the horrible pain of having his constricted manhood trying to expand. He tried to plead through his new ball gag :
"No no, ... PLS ... FTOP!"
She finally grabbed his exposed balls, stretched a little bit by the device and began to sensually massage them. Harry never had his balls massaged, it would have been a really enjoyable feeling if the excruciating pain in his cock was not nullifying it. Of course he tried to trash and move his hips to avoid her ministrations, he screamed in his gag.
The sight of Harry's trashing body and his pain aroused Frank, his hardon was noticeable inside his tiny g-string.
Frank could not help himself, he grabbed the bottle of oil and dropped a good amount on Harry's chest before offering him a good full upper body massage, insisting on his nipples, while Joann was taking care of his perineum and balls. Even if it was a male working on his nipples, any hope of keeping control of his arousal was lost, and the pain increased.
His torture lasted for 20 minutes before they stopped. His cock was in real pain and immediately started to deflate as soon as Joann stopped. His manhood being less constricted, the pain eased.
"You're really not good at controlling your cock my boy! Or perhaps you like pain? I suppose you can now understand why those toys are called "The gates of hell", don't you?" Laughed Frank.
Frank went between his legs and removed the gates of hell, Harry had a sigh of relief. He had a look at his cock over his chest, everything seemed ok even if red.
Joann went on his side and began playing with his now free cock, caressing it with her fingernails like before. Having his cock touched and now unrestrained, Harry's arousal went up again, despite his predicament. He had been in real pain, but it had been teasing after all and even if his cock had been prevented from growing, he was somewhat frustrated about not being able to cum.
Frank spoke again
"My turn now, I'll show you how skilled I am at massaging a pair of testicles. But before, I think we must secure you a bit more, I wouldn't want you to hurt yourself..."
"Oh shit." tough Harry, was he not already absolutely helpless like that? And he remembered all the unfastened straps on the cross, there was enough to mummify a human body.
Frank grabbed the straps sitting under the cross at Harry's hips level. He buckled them and tightened a little. Harry's lower belly was not constricted but securely held against the cross.
Frank moved between his legs and did the same with straps on his upper thighs. Any hip movement was now absolutely impossible, the little freedom he had on the middle part of his body was gone.
Frank grabbed the oil, and sat between his legs, uncapped the bottle and Harry felt the liquid drop on his balls and cock. He started spreading the oil, once again massaging his genitals ...
"Now boy, we didn't have a discussion about what you did to MY balls last night."
Harry's fear grew, Frank telling that now was surely not announcing a peaceful testicles rub.
"It's not cool to hit a guy here, I was in a lot of pain. I think It's time to begin settling things between us and let you feel how much pain I felt with a good massage down there."
Harry straightened in his restraints. The idea of having his testicles massaged by Frank was bad, but him speaking about pain was frightening, they were not talking about teasing anymore.