Stepson masturbates and ejaculates in my underwear-clad buttocks

As I lounged on the couch, my stepson's gaze fell upon my voluptuous figure. His excitement grew as he stroked his massive member, aiming for my ample ass. His climax drenched my underwear, leaving me in ecstasy.

After a long day at work, I came home to find my stepson lounging on the couch. His eyes were fixed on my tight, round ass, encased in my favorite underwear. I could see the bulge in his pants growing, his arousal evident. In a bold move, he reached over and began to fondle my ass through my underwear, his hands exploring my curves. His excitement was palpable as he unzipped his pants, revealing his big cock. He proceeded to pleasure himself, his strokes becoming more vigorous until he couldn't hold back any longer. His hot cum shot straight onto my ass, his seed soaking into my underwear. The sight of his cum dripping down my ass sent shivers down my spine, a testament to his intense orgasm. This was a moment of pure, unfiltered lust, a testament to the primal desires that can ignite between a stepson and his stepmom.