Your mistress revealed to you months ago you would no longer be allowed to cum with your hands. It took some time, but you finally learned how to cum from her sharp spanks and heavy touch.
She said she had never cum from oral before. You thought you could prove her wrong so she bet you that you couldn't do it, and would be locked in chastity until you made it happen. Perhaps you were too confidant in your abilities. You thought you would
