I was at the beach with my stepson when the urge to pleasure myself became irresistible. I had to take care of myself, and fortunately, my husband was nowhere in sight. As I sat on the sand, I began to touch myself through my wet bikini bottoms, lost in my own world of pleasure. I didn't realize my stepson was watching until he joined me, his eyes filled with lust. The sight of him pleasuring himself was too much for me to resist. I invited him to join me, and we soon found ourselves engaged in a steamy session of mutual masturbation. The thrill of getting caught only added to our arousal, as we explored each other's bodies in the secluded area of the beach. The experience left us both breathless, and I knew then that this was just the beginning of our wild adventures together.