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Mrs. Rackert’s huge, soft tits felt like dough in my hands. Kneading them from behind was almost as intoxicating as the feeling of her folds convulsing around my cock.

“Ah… Ross, your hard rod, it’s so big! It’s rampaging inside me! I’m gonna cum!” Mrs. Rackert moaned in between panting breaths. Her long dirty blonde hair disheveled and flecked with glistening sweat from our rough copulation. “Ross, I’m cumming!”

“I’m cumming, too, Mrs. Rackert. Hnnghn!”

I felt my sacs tighten, a pressure building in my loins causing me to lose my rhythm. Feeling the incoming orgasm, I let go of Mrs. Rackert’s tits and took hold of her plump hips and pulled, driving my penis in as deep as I could before it exploded, pumping load after load into my professor’s innermost depths. My vision blurred as my ejaculation went on: ten seconds, twenty, thirty seconds; I almost made it to forty before I felt my high start to fade. As the pleasure dimmed, I became more aware of the semen leaking from Mrs. Rackert’s snatch, oozing out thickly to pool on the sheets below us. I was panting myself as I pulled out and flopped back onto my butt upon the soggy bedsheets. I saw Mrs. Rackert’s curvy figure slump tummy down as well. We both took a minute to catch our breath after the wild sex. This ejaculation volume booster my girlfriend found was incredible, but it took proportionally more out of me, cumming that much for that long.

Mrs. Rackert stirred first. Pulling herself up into a sitting position, I watched as she ran a hand over her body, wicking jizz from the puddle from her breasts, and stomach. She looked me in the eye as she dropped the collected cum from her hand into her mouth and swallowed.

“Ross, you’re such a naughty boy, seducing your professor like this. You know I can’t give you extra credit for this,” she purred. The sights and sounds threatened to pierce my refractory period and make me hard again in a hurry.

But, her words themselves had the opposite effect.

“Shit… Mrs. Rackert’s a fine piece of ass, but you had to bring up class and now I can’t forget how she failed me…”

The shapely professor’s demeanor changed suddenly from seductive to sympathetic.

“Aww, sorry about that, hun,” she apologized. Shaking out her golden …