Yes

"Ask for permission before you cum, slut. Am I making myself clear?" John gathered himself together, despite the incredible attention Doe lavished on his asshole, enough to make his voice firm. She moaned her acquiescence into his ass, her tongue slipping in and out, licking up the filthily bitter remnants of his bathroom activities, her masochism turning her humiliation into submissive pleasure. Soon, it became too much for her. She pumped his penis faster and faster, matching the increasing pace at which she was fucking herself.

"Please Sir can I cum? Please please I'm such a good little girl for cleaning your asshole please let me cum please" Her voice trembled with need in between her furious licking and sucking. John, lost in pleasure himself, saw no reason to disagree.

"Look into the camera and cum in five... four... three... two" He stared lustfully at the camera and met Doe's sex-crazed eyes. She gazed intensely into the camera, her tongue frozen in John's ass and her left hand trembling around his cock while she focused all her attention on her masturbation.

"One. Now."

Doe's eyes rolled up into her head and she screamed her ecstasy into John's asshole, ignoring the drool that she was dripping onto the floor. The scene was too fucking hot for John to handle. Yanking her hair back, he thrust his cock into her open, inviting mouth once... twice... thrice and put his cock on her face, shooting thick ropes of semen all over her forehead and into her hair while she rode out her orgasm.

When it was done, Doe smiled dumbly in orgasmic bliss and licked a spot of stray cum from the corner of my mouth. She gave John's cock a wet kiss, licking up all traces of his cum like the cum hungry slut she was and then slumped happily to the ground.

"Please do that to me as much as you want, every hour every day... We can do it in here or in your office or at restaurants or anywhere Sir pleases" Doe purred happily.

"I always knew you would make a better servant than you did a co-worker." John replied, tilting his head back tiredly. "Guess we proved that today."

"I can prove that every day from now," Doe murmured, resting her head on John's tie while she suckled idly at his cock.

"And indeed you shall," John answered.