Oh, not for a while yet, although...

Unbeknownst to Ultraboy, Pleasure could control his orgasm and had phenomenal staying power, what Ultraboy hadn't twigged was that Pleasure's pre-cum was slowly (very slowly) making him more susceptible to Pleasure's advances with every thrust. Ultraboy whimpered as the chemicals that he'd been injected with kept him hard and his balls full so that the evil pair could harvest his super seed.

Pleasure slightly modified his line of attack, targeting the bound heroes prostate, which made Ultraboy cross his eyes and thrust his hips up in the air, smiling at that reaction, Pleasure sped up his thrusts, all the while hitting that sensitive nub inside Ultraboy.

"Oh God, w-what are y-you d-doing t-to m-me?!" Wailed Ultraboy as he felt another load getting ready to be expelled from his heavy ballsack. Taboo stood behind Ultraboy and held the young mans head, relaxing him as he told him that they planned to turn Ultraboy into their own personal sissy sex ****, to please them whenever they called on him. Taboo's words and Pleasure's continual targeting of his prostate had the desired effect, Ultraboy moaned as he came again, this load making vat number 1 get to halfway full.

Taboo looked up at Pleasure and winked as he put his hands on either side of Ultraboy's head, the young hero tried to shake him off, but to no avail. Taboo looked down at Ultraboy, making the young hero gaze up at him in a daze.

"Ultraboy, whenever my son hits your prostate, you will cum instantly, you will associate his cock with pleasure (no pun intended), when I fuck you, you will associate my cock as being your one true weakness, every time you see me, you will fall to your knees and submit to me, do you understand?"

"Y-Yesssss… UGH!"

Ultraboy grunted as Pleasure hit his prostate again, drawing another heavy load into the vat. Pleasure telepathically sent a message to his dad, to get another vat for their own personal study, not trusting Dr Bluder to live up to her end of their deal.