Grandmother Mabel Punishes Her Grandson with a Huge Dildo

A dirty story from Grandmother Mabel’s private sessions

My grandson thought he could get away with talking back and acting like a little brat when he came to visit me last weekend. He had no idea what was coming. As his grandmother, I’ve always believed in firm discipline, and this time I decided he needed a lesson he would feel for days.

I told him to go to my bedroom and wait. When I walked in, he was still fully dressed, looking cocky. “Strip,” I said calmly. He hesitated, but one sharp look from his grandmother was enough. Soon he stood there naked, his young cock already half-hard from nerves. I sat on the edge of the bed and patted my lap. “Over my knee, young man.”

The spanking came first — hard, steady smacks on his bare ass until it glowed bright red. He squirmed and whimpered, but I held him down firmly. “This is only the warm-up,” I told him. “Your grandmother has something much bigger planned for that tight little ass.”

Bringing Out the Huge Dildo

I reached into my nightstand and pulled out my favorite toy: a massive, veiny 12-inch dildo, thick as a wrist, with a heavy set of balls at the base. His eyes widened when he saw it. “Grandmother… that’s too big,” he protested.

“Nonsense,” I replied, generously lubing the enormous head. “Bad boys who disrespect their grandmother learn to take what they’re given.” I positioned him on all fours in the middle of the bed, ass up high. The cold, slick tip pressed against his puckered hole. Slowly, I started pushing.

He gasped loudly as the fat head stretched him open. Inch by thick inch, the huge dildo sank deeper into his ass. I watched with satisfaction as his hole swallowed more and more of it. “That’s it,” I murmured. “Take it for your grandmother.”

The Real Punishment Begins

Once half of the massive toy was buried inside him, I began to thrust. Long, steady strokes at first, then harder and faster. The wet, obscene sounds of the huge dildo pounding his ass filled the room. He moaned and gripped the sheets, his cock leaking onto the bed as I fucked him deeper.

“You feel that, don’t you?” I said, leaning over him. “That’s your grandmother teaching you a lesson with her big dildo.” I reached underneath and stroked his throbbing cock in time with my thrusts, edging him cruelly while never letting him cum. Every time he got close, I slowed down or pulled the dildo almost all the way out, only to slam it back in even harder.

I flipped him onto his back, legs spread wide like a whore, so I could look into his eyes while I punished him. The huge dildo disappeared into his gaping hole again and again. His face was flushed, tears of overwhelming pleasure and humiliation running down his cheeks. “Please, Grandmother…” he begged, but I just smiled and drove it deeper.

By the time I finally let him cum, his ass was red, swollen, and stretched wide open from the relentless dildo fucking. He exploded all over his stomach while the thick toy was still buried deep inside him, his whole body shaking from the intensity of the punishment.

Afterward, he lay there panting, completely spent and submissive. “Will you behave better for your grandmother from now on?” I asked, gently stroking his hair. He nodded weakly, already knowing he’d probably misbehave again just to feel this treatment once more.

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