Mrs. Grayson makes a proposal

The Asian student which had previously lamented that Natasha and Ian hadn’t begun their sordid activities at her bench now slid into action, her paper finally finished, and it was to the accompaniment of several naughty grins from the other girls, still struggling to finish the test without becoming dazed by Ian’s massive pillar of turgid man-meat, that she sneaked up on Sean, the young man gasping with increasing desperation each time that his cock slid into Emma’s impossibly tight asshole, the sexy blonde gasping at her stuffed anus and overflowing pussy.

Barely had Sean time to gulp at the sudden touch of a pair of lips against his scrotum before the Asian student, Tanya, had sucked one of the heavy orbs into her mouth, her cheeks bulging obscenely as she thereby caused Sean to come flying over the brink of orgasm, his heavy cock throbbing inside Emma’s ass as a generous batch of cum began to rumble down through it and out of his distended cum-hole.

Sean’s high-pitched cry of release caught Ian’s attention, and the substitute teacher could do little but stand with his jaw hanging open as he watched how Tanya popped the young man's ball out of her mouth and stood up to rub her voluptuous body against Sean while the scrawny teenager struggled to exit his cock from Emma’s anus, the snug hole sucking his cock back so that the process became long and arduous, much of his balljuice ending up coating the walls of Emma’s rectum.

Eventually though, Sean’s plump cockhead popped out of Emma’s stretched asshole, and it could only jut in the air for a few seconds before Tanya dove in and caught it, expertly sucking the blunt end of the long slab of rock-hard cockmeat into her mouth, rubbing her lush lips against the sensitive surface while long spurts of creamy jizz was shot into her mouth.
Showing off the fact that her legs were now reduced to a somewhat rubbery state, Emma still managed to get down next to Tanya, and was looking eager to relieve Tanya in gulping down the ample surges of cum.

“Oh please Tanya,” Mrs. Grayson spoke with a reprimanding tone, “demonstrate that you possess the proper school spirit and let Emma have a go,” at this point she hit the camera once more, taking another shot of Natasha’s face and Ian’s cock, “or I shall come over there and spank you.”
In response, Tanya spat Sean’s cock out of her mouth and turned towards Mrs. Grayson, asking her “Is that supposed to make me stop?”, but soon finding herself nudged away from Sean’s dick by Emma, who took up the heavy but to her mind delicious task of gobbling down the remaining releases of jizz pulsing out of his cumhole.

“Do you have plans on how to spend the interlude between this and your next class, Mister White?” Mrs. Grayson asked, putting her free hand on top of his plump cockhead.
“Miss Campbell has voiced an interest in seeing me,” Ian flashed Mrs. Grayson a nervous smile, catching in the corner of his eye how Natasha rubbed her pout lips over the bell-shaped end of his prick, “and I suppose that I can’t really let her down.”
As if Mrs. Grayson’s appearance and Natasha’s sucking of his cock wasn’t enough to distract Ian, there was also the alluring sight of Tanya and Emma on their knees before Sean to tear his attention away from his conversation with Mrs. Grayson.

“A pity.” Mrs. Grayson gave her verdict, slowly moving over the floor so as to stand only inches away from a male student, the boy feeling a bubbling need to masturbate as her ass, most of which was left bare by the high cut of her latex dress, was now on display for his viewing pleasure.

“But to my mind,” Mrs. Grayson sounded as nonchalant as she acted, “there must be something that I can do to make you stay, now that class is almost over?”, her hand now shifted its grip of Ian’s cock, and it was with a firm but delicate touch that she **** the rigid pole downwards.

Struggling to respond somehow, Ian came up short and merely let out a stammering “Uh…” as Mrs. Grayson smiled at him and brought his cock ever closer to her crotch.
“Natasha, honey,” Mrs. Grayson spoke to the student, still on her knees between her well-hung substitute teacher and the notoriously disciplinarian Mrs. Grayson, “be a good girl and pull up my skirt.”
As a testament to the obedience that she had fostered amongst her students, Mrs. Grayson soon had the skin-tight fabric of her skirt pulled up far enough by Natasha’s slender fingers to reveal her hairless, moist pussy.

“Like I said, Mr. White,” Mrs. Grayson began, noticing with a cocky smirk how Ian’s gaze had turned downwards to her slit, and his cockhead which now hovered only millimetres away from it, “there must be something I can do to make you stay longer.”
It was then with an expression of mocked revelation that Mrs. Grayson pulled Ian’s cockhead even closer to her soppy sex, actually pushing the fat business-end of his member past her labia and into her pussy proper.
The velvety feel of Mrs. Grayson’s pussy on his cock felt like a preview of heaven to Ian, but the buxom teacher did nothing now except stand before him, doing her best to appear unfazed by the enormity of the cockhead buried inside her slit as she told him “Feel free to push the rest in at any time.”