With flying colours

It was all too much for Barbara and despite a small part of her mind screaming at her own depravity, her twisted side won and she loudly moaned around Clark's cock. With frantic movements, she removed what little clothes she still had, her curvier body breathing as she remained entirely naked. Tracy moved behind her, her hands caressing her friend's sides alluringly. One of her hand stayed on Barbara's crotch, her digits toying with the swollen labia and clit, occasionally penetrating the drenched hole. Licking Barbara's bulging cheek slowly, Tracy savoured the growing taste of corruption coming from the teacher. Looking at Clark's body, she noted how he was falling too. The combined effect of her milk and her pheromones were still having an effect on him. His previously toned body was gaining several pounds of muscle while whatever fat he might had was disappearing. His cock was slowly growing too. The huge slab of meat was now 10 inches long and as thick as a beer can. Obviously, it was making Barbara's job more difficult, the teacher gagging and slobbering around it as she tried to deepthroat it. Each time she seemed to succeed, he grew a little more. It made her groan with frustration. Once again this brat was making her job harder! But this time I will show him, I will show them she thought.

One of her hands released his ass and moved down to the engorged lips of her slick pussy. Moaning, she slid two fingers deep into her sodden depths and ran her thumb over her clit excitedly. Her hips bucked in her animal need as she cum, her juice gushing around her fingers as Tracy's hands were massaging her new magnificent booty. This orgasm fueled her lust rather than calming it. Removing her glistening fingers from her honeypot, she once again grabbed Clark's ass. Then she made her move.

Simultaneously, she inserted her two wet fingers in the teenager's ass, massaging his prostate and sucking more of him into the warm wetness of her mouth, taking him all the way to the back of her willing throat, losing her gag-reflex in this depraved act. Clark's eyes shot open and his legs jerked with a shock of pleasure that shot through him as she swallowed his cock entirely, sliding her full soft lips down the length on his meaty shaft.

Clark's face was a mix of shock and ecstasy as Barbara began to move her head smoothly up and down on his monstrous manhood. The intense sensation was enough to send him over the edge, giving him the biggest orgasm of his life. Barbara moaned as she felt gushes of warm fluid in her throat. She removed all but the head of Clark's spewing dick from her mouth. Her cheeks bulged as the two last burst of fluid filled her mouth to the brim.

“Oh yeah Barbara…” Tracy murmured, “you’re such a good little cock-sucker.” She didn't have the time to say more. Turning her head, Barbara grabbed Tracy with one hand and mashed her lips on her mouth. Both women moaned as they shared Clark's fluids. Sadly for them, it was just precum but Tracy noted with delight the strong taste of corruption it had. She rewarded Barbara for her new depraved milestone by moving three fingers along her slippery twat, spreading her soaking wet lips before easing all three fingers inside her, leisurely masturbating her friend as their kiss grew more decadent.

"Oh fuck! That is not a reaction I'd expected! I bet we will have more fun together " Tracy whispered as her hand left Barbara's snatch. She brought her soaked fingers up, staring at her friend as she eagerly sucked on her digits.

"You're almost ready my dear, I think you know what to do for your final lesson," Tracy said as her eyes drifted toward Clark. Barbara just gave a pleased moan and sucked more of her own fluids, a long, darkening tongue wrapping sensuously around Tracy's fingers, the tip beginning to split.