Okay, so that was funny, but do you really think I should let you stroke for just that? I don't care how much you want it.
Tell you what. Why don't we let you do the next one. Think of something you can do for me to make me let you out of that belt again. It can be humiliating... or painful... or both. Use your imagination.
Now do it for me. Don't you dare go easy on yourself. You can't continue until you're groaning in pain, or blushing in shame, or both.