color me a wimp, but i can barely take clothespins. if they are on my nipples, they have to be stretched out...other areas i can take it a little more severely but mostly i think i'm a clothespin wimp. i'm actually okay with that.
I actually pop blood vessles if they are placed on the nipple or areola. On the skin around it its fine, still hurts like hell though, but then Im not one for pain, its even lower in sensative areas....