I nodded dumbfounded agreement. As a man dedicated to life-long learning, who was I to stand in the way of this girl's quest for the artistic truth? Plus, with forty-five years of living and loving under my belt, perhaps I could even teach the teen a few things. So, I grabbed her in my arms and squeezed her hot body against mine, kissed her hard, and then jammed my tongue between her lips and into her mouth until it swirled up against her own tongue. We frenched each other passionately in the empty classroom, my hands drifting down to her cute, tight ass, grabbing and squeezing the round, firm cheeks that swelled her cut-off blue jeans.
She broke away from my hungry mouth and asked, "Could you show me how a man would tit-fuck a woman?" 

"With pleasure," I replied, assured that we both had the appropriate learning tools for the task in question. 

I helped her pull off her t-shirt. Her sun-kissed tits were unbelievably huge and heavy-looking, her brown nipples thick and long. I felt up her jugs for a good long moment, marveling at their size and weight, before she suddenly dropped to her knees in front of me. She cupped her mammoth mams, holding them up and together and inviting me to slide my cock in between their awesome, fleshy goodness. It was going to be one helluva tight fit.

I kicked off my shoes and dropped my pants and shorts, and my six-inch teacher's aid sprang out and quivered in front of the knowledge-deprived girl. She spread her tits apart, and I slid my cock in between her humungous hooters, before she closed them over top of my dick. The heat and the tightness were incredible. I tentatively thrust my hips forward and began tit-fucking that gorgeous, top-heavy teen. 

"How does that feel?" she asked, packing her mountains even more tightly together and glancing down at my peek-a-booing cockhead.