You've been locked in chastity all year long but today your mistress finally allows you to cum. It's a good thing you've been saving it up in those balls all year, because you're gonna need every last drop for a special recipe. That's right, you're going to make a big batch of CUMnog as I instruct you. You have permission to jerk off until the cup is full, then swallow every last drop before locking your pathetic cock back in chastity until next year.