You're such a slut for your own precum. I know how much you love watching it bead up at the tip of your cock so you can lick it off of your finger. But today is a lesson in delayed gratification. I want to see just how badly you want that precum. You're going to stroke through your underwear and make the biggest wet spot you possibly can. After that, I'm going to make you shove them in your mouth, wet spot first, and suck every last drop out of them. I want them so clean that when they dry, you won't even see a cum stain. Hold them in your mouth, suck, stroke, and inhale your own cum until it's time for the main course.