Anddddd stop!
You didn't think I would let you cum this early in the tease did you? Of course not, silly. There is still a way to go before I decide whether you are allowed to push yourself over the edge. And remember, a good slave will not necessarily seize the opportunity to cum when allowed by his mistress. You always have the option of turning it down and leaving denied. (Really good slaves would beg me to lock them in chastity after they are mercilessly teased and painfully denied.)
While we're on the topic of cooling down, why don't you take another ice cube and stick it up your pert butthole. Remember, no leakage allowed, or you will pay the consequences later!