To complete this task you are going to need a pair of nipple clamps and your cock/balls. You're going to be hurting yourself for me today, but the clamps aren't going to be attached to your nipples. I want you to affix those nasty clamps tightly onto your cock and balls for me. You will be pulling on the chain under my instruction, causing a considerable amount of pain.

Fortunately for you, I do want you to cum for me today, but sadly, I have no intention of allowing you to enjoy it in the slightest. Let's ruin this one together.