You've been begging Me to let you jerk off, and since I'm feeling generous, I allow it. As you stroke your pathetic little dick, I'll be laughing at its inadequacy. You'll be desperate to cum, but I'll tease you, edge you, and leave you hanging. Your orgasm will be denied, and you'll be left with nothing but frustration and humiliation.
You'll be instructed to jerk off in front of the Me, showing Me your pitiful attempts at pleasure. I'll mock your every move, making fun of your tiny cock and your inability to satisfy a real woman. You'll be my plaything, and I'll use you for my own amusement. And then, just as you're about to cum, I'll deny you.