A good facefucking

Deciding to let her edge just a bit further, John turned instead to her greedy mouth. Due to the constant edging, SCP-239 hadn't even noticed he had entered her containment chamber until he laid his massive dick across her face. Instantly, her slutty conditioning led her to start worshipping the divine shaft as if it were her god, licking along the sides, sucking on the tip, worshipping the pair of balls. But John wasn't interested in this tender teasing; he wanted to get his rocks off. Thus, he stopped her, and told her three words: "Open up, slut."

SCP-239, already conditioned into this, opened her mouth and allowed the cock to plunge in to her mouth. John had no mercy, roughly shoving his bitch-breaker down her unprotected throat, his balls up against 239's nose. The rough treatment elicited a stream of "GLK! GLK! GLK! GLK!", a sound undignified of a young woman, but in this moment, SCP-239 was not a woman, she was a slutty fuck-pig, a plaything for the male Foundation staff to sate their perverted lusts. The mind-rotting musk wafting off of John's balls only made her hornier and more **** for release. Long ago had she become an addict for sexual pleasure, and the Foundation conditioned her into becoming constantly aroused and in need of cock, in order to prevent her reality-altering powers from being exerted onto the rest of the world.

Sensing his impending climax, John began pinching the little blonde bimbo's nipples, making her writhe underneath him and moan onto his cock. "Here comes your next load, whore", he said. "Take it all, you jizz-addicted cumsow! Worship this cock!" SCP-239's eyes were rolled back due to pleasure and lack of air. Finally, with a groan, John came into SCP-239's mouth, her cum addiction making her swallow it all.

John was now satisfied, but he still had a duty to perform.