My sub has been quite a whiner about the size of my dildo. Always, "Please stop mistress, it's too big!" I decide to punish him, and maybe he will learn to take my thick dildo. I begin by sitting on top of him, and paddling his big fat ass, while verbally humiliating him. Then, I sit on his face and grind my ass into it. Now, the real torment begins. I start teasing his cock, getting it nice and sensitive for the pain he's about to receive. Then, I bite his cock and balls hard, stretching them with my teeth. Now, he needs to be paddled on the cock and balls. I slap his cock and balls with my paddle mercilessly. Now, I tie up his balls nice and tight. I squeeze and torment his cock and balls with my hands. I take some clothes pins and clip them all over his balls. Mistress likes big balls, so i pull and tug hard on the clothespins to stretch his dangling fat balls even more. I end with a few more slaps to the balls with my paddle. I think he has learned his lesson, and his bottom will be more willing to take my big dildo
this is why you never disobey your mistress, the verbal humiliation made this perfect.