Ian does just that

Ian was certainly not in a position where he need Mrs. Grayson’s permission to blow his load, and the mounting pressure in his nutsack meant that he would not have more than a few seconds before the first blast of jizz would come soaring out of his pisshole.

Making the most of those few seconds by thrusting himself forwards until the whole length of his cock was buried inside Mrs. Grayson’s anal passage and her luscious buttocks were pressed tight against his waist, Ian then gritted his teeth for a brief moment before feeling how his jaw was pressed downwards and every muscle in his face tensed up while a hoarse bellow came pouring out of his wide-open mouth as a long jet of cum cleared his cockend and went flying deep into the curvy brunette’s cock-filled anus as the steady pulsing of his gargantuan member as sperm was pumped out of it along with the realization that he was now filling her ass up with his load led Mrs. Grayson’s orgasm to reach new heights, her climax hitting her so hard that she had to let go of his balls and allow her wrist to bump against the side of the desk, releasing another long scream soon thereafter when his throbbing testes smacked into her gushing slit one final time, where the two massive orbs would remain, assailing her sensitive sex as the girlcum pouring out of it would lead to them to be absolutely coated by a glossy layer of the gelatinous fluid.

Mrs. Grayson regaining the ability to get out whole sentences or even managing to have a full word pass past her full lips without the interruption of her letting out either a moan, a groan or a full-blown shriek had by now proven itself to have been nothing more than a temporary occurrence, as she would manage to get one third of the way or halfway through an obscenity before her voice broke up and transformed itself into a delirious scream of raw lust as Ian’s monster of a cock continued to release his balljuice into her rectum in long, powerful squirts, the length and volume of his latest ejaculation being drawn out until it surpassed even his previous releases of jizz thanks to the manner in which the walls of her rear-entrance continued to massage and milk his humongous fucktool while she trembled in front of him, her toned midsection spasming wildly while her huge tits remained in their position of resting on the desk.

Now having gotten to the point where he could focus his vision on the sight of Mrs. Grayson’s ass quivering as his cock disappeared into it through her dramatically expanded sphincter, Ian was satisfied with the ecstatic scream that he succeeded in coaxing from her by pulling his beating, cum-spewing fuckpole back a few inches before plunging himself forwards again, with the impact of his heavy balls against her glossy pink slit resulting in several long tendrils of girlcum shooting out of it to whirl down towards the floor.

By the time that last of more than a dozen extremely sizeable gushes of spunk had exited Ian’s cumhole, all of them being met by a particularly excited vocalization from Mrs. Grayson, a long rope of girlcum was distending itself from his balls as they now began to beat again her foaming honeypot at a less frantic pace.

“Mr. White…” Mrs. Grayson was the first of them to break the silence that had followed the last of her blissful screams as she allowed her dreamy moan to ooze past her lips.

Wiping some sweat off his brow with his right hand, Ian remained silent, only releasing a barely audible grunt as he began the process of extracting his cock, which remained as hard as ever, from the snug confines of the thoroughly analized English teacher in front of him, his right hand soon wrapped around the part of his veiny fuckstick that he had thus far managed to slip back out through Mrs. Grayson’s resisting ringpiece, with the foxy brunette soon begin to stir and to sway her ass gently, unwittingly making it harder for Ian to complete what he set out do to as she rode her way through one more climax.

There was a loud slurping noise when Ian’s bulbous cockend came slipping out of Mrs. Grayson’s asshole, a multitude of gluey tendrils connecting them to each other before snapping, and that noise was soon followed by the dense thud of him dropping his cock onto her back and the girlish yelp, seemingly completely out of her character with her previous stern demeanour, that came flying out of Mrs. Grayson upon feeling Ian’s massive organ lay itself out along her spine, its throbbing reflecting that of his balls in that it might have become less dramatic after the end of his super-sized cumshot, but was still such that it more than stretched the limits of what ought to be humanly possible, though she soon had reason to let her disappointment be known through a needy sigh when he raised his member from her back and allowed it to cast its shadow over her voluptuous figure.

Gasping when she felt Ian’s fingertips against her ribs, Mrs. Grayson gasped when he used a soft touch in running his fingers down the generous curvature of her waist and hips before letting out a groan when he used his hand to grab hold of her hip, finally coming so far as to cry out in surprise at the point where his left hand grabbed hold of her as well and he proceeded to flip her onto her back, leaving her without a clear understanding of what was going on as he hurried to adopt a position for them where she was now on her back and splayed out across the desk, and he counted himself lucky in that he hadn’t used enough **** in turning her around to actually send her flying towards the floor, with her long, gracefully muscled legs now resting against him, her firm calves propped up against his chest, and her ass was presented to him in a way which ensured that all he had to was grab hold of his cock and move it down a little, leaving a trail of precum behind it to glimmer against the richly tanned skin on her delectable buttocks, before he could feel how the fist-sized tip of his fat prick was resting at the entrance to her ass.

If not for her considerable beauty, which had been intensified now that Ian had managed to help her loose her stern appearance and have it replaced by a lustfulness that was decidedly primordial in its nature and the extraordinary character of the situation in which the two lovers now found themselves, Mrs. Grayson would have appeared comical to Ian due to the way in which her eyes at first went wide as she realized what he was about to do and then were shut tight as he did, another scream rising out of her throat and her stomach muscles rippling again as he speared the business-end of his fucktool through her distended ringpiece, finding it slightly strange to have his cock push through the vast deposits of jizz that had by now begun to trickle out of her ass but not paying it more than a passing notice as he instead lost himself in the task of getting the whole of his cock back inside her anal passage.

As Mrs. Grayson’s rectum had remained expanded after his last taking of it barely two minutes ago, Ian found that it was much easier to feed his cock into it this time around, and soon took advantage of that by beginning to see-saw his cumtube in and out of her ass, their new positions in relation to each other meaning that his midsection was soon doused with the first spray of girlcum that exited Mrs. Grayson’s pussy just as she resumed her production of throaty, orgasmic screams that rang through the abandoned classroom along with the wet noise of Ian’s glistening fuckpiece slipping in and out past her stretched sphincter at a rapidly increasing pace and the sharper one of his balls slapping against her ass, with the way in which his scrotum slapped hard against her firm buttocks offering Ian no pain while Mrs. Grayson seemed unwilling to voice any dissent at how the steady collision of her ass and his testes soon had the former having been equipped with a reddish sheen that made it seem as though she’d just received a thorough spanking.

Ian spent the following minutes alternating between plunging all fourteen inches of his dick deep into the tight recesses of Mrs. Grayson’s ass and pulling back out until only the protuberant crown of his tumescent member remained hidden beyond her expanded cinnamon ring, all the time being both amazed at and flattered by how the buxom brunette spent the whole time locked in what appeared to be one long continuous orgasm that by now had led her to project so many generously sized gushes of girlcum that most of his stomach and chest was coated with it, the viscid juices of her climaxes mixing with his sweat to adorn him with a glossy sheen as though he’d just gone through a very intense workout.

Just as Ian felt the pressure in his balls approach the critical point where another ginormous batch of cum would come flying out of his cumhole to fill into Mrs. Grayson’s anus, this second load being pumped into most likely bringing it beyond the brink of overflowing, he heard the unmistakable thump of a door closing, the sound signalling that someone had just walked in on him and the foxy vixen that was currently preoccupied with writhing around his massive fuckmast.