I must have climaxed 4 times yesterday and here I am again. Tickling my nipples by hand and wishing someone else was doing it. Did I mention I'm a D cup? Very ticklish breasts
Very effective! Just to give you something to compare it to I had a session with somebody inwhich I used a hairbrush on her soles. Of course drove her past insanity but she liked it. No safeword even after 3 minutes. But I put one of those on her nipple for 5 seconds. Twisted away and said, "No, I can't handle that!" It's too intense for some people but give it a shot. You might like it.