I mean, at first, it hurts a bit, but you would still react. After some time they would get numb and when you take them off, it would hurt for a few seconds, but the pain goes away pretty quickly. If you always use these clips when you masturbate, then the sensibility will improve, because your body associates it with arousal. Don't ask me, where I know this from hahaha xD
Thank you for answering, but what I don't understand is that he wore them for a whole day before without giving his nips a break and then they immediately jumped into nipple play again. Doesn't that only hurt?
Uhh idk maybe, I could imagine that after that day the nipples are a lot more sensitive, because it hurts. It's like other BDSM play, where you think it hurts, but it's really more kind of an additional kick to your horniness.
I know it's fiction and all, but doesn't having the clips on for too long have the opposite effect??