STOP! Hands Off.
Aw, sweetie, look at you! You look so cute holding your panties and staring up at me. Are you mad at me? It's OK if you are, this is our first time doing this. You are going to be so adorable as my little sissy boy. Do you like how my big boobies look right now? They always swell when I am aroused. Are you thinking of the big men that fondled them earlier today? Do you wish that would have been you?
Poor baby, tiny dicked little sissies don't get to touch big beautiful boobies. They are only for real men to enjoy. You may stare at them though.
Now, here's what I want you to do. Take your panties and stretch them between your hands so the silkiness is exposed. Keep your body still and rub the silk back and forth and around the head of your dickie for 3 minutes. Remember, only move the panties, not your dickie. Concentrate on the head, and do not stop no matter how tingly it gets. And of course, no messes sissy boy.