Older women
Waiting for my wife in a London pub, I got talking with a group of about eight women 'of a certain age' who'd come to town for a drink and a show. As it will the conversation turned to sensitivity of nipples. It turned out that about half of them were turned on by nipple action, the rest were left cold (including a mother and daughter, who'd never discussed it before).
(enile, Sat 8 May 2010, 12:32, Reply)