I have discovered through experience that I have overly sensitive nipples, that don't take clamps well. It's a good thing when a Domme gags me before applying those biting things. Otherwise some person who overhears my blared response might think I'm in trouble and call the authorities.

What else helps is if she applies a little bit of ice to my nipples initially.

I'm not against nipple play; it's fun.

How it's done, like the lady above stated, is.