Okay sissy, you can untie your feet and take out your gag, but keep on the lace tied tight around your balls and put your nipple clamps back on. I have another degrading idea for you.
I want you to go to the toilet and stroke your little problem to the edge while you stick your head in the water. Make sure your face is submerged while you stroke - you're not allowed to stop until you reach the edge of orgasm. Every time you have to come up for air, I expect you to spank each asscheek and thigh 10 times before you try again.
And if you want to squirt out any melted ice from your ass now, you have to do it BEFORE you start the exercise. If you prefer to keep holding it in until after the tease, that's fine too.
Come back when you're done.