Are you being disobedient on purpose?
Do you want to be my stroke-slave or not?
I don't like giving orders twice. I told you to stop stroking as soon as you reach the edge and take your hand away. I want to watch it throb and drip without your greasy palm wrapped round it! You are not supposed to stroke again until I tell you to.
I'm pretty sure you sneaked in a few extra strokes that last time. I don't want you going over the edge.
Remember, if you cum without permission, you have to ruin the orgasm and leave immediately. Do you want that to happen?
No? Well lets give it another go.
Edge for me once again. This time, no cheating!