Personally, I absolutely HATE my nipples played with. God that annoys me so much.
And for those of you who don't know.... nipples are Gay Man's Priority Number One. meaning they hone in on those like a smart bomb. (queers!)
When I was single, I had to tell people when I brought them home 'When you fuck with my nipples, sex is over." Most people get the idea right away. Else I end up wearing a ski jacket during sex. One guy I went to his place while I was on vacation with obviously never heard of a warning before. Because despite several of them, first chance he got he clamp down with his teeth. (queer!) A swift knee to his crotch let him know he just got voted off the island. He lay there struggling to hold back tears while I got dress and barely managed a weak "why you do that?" I was like "Oh I'm sorry. I thought you would find that as arousing I found you snacking on my tit did."
(queers!)