Eh, I'm not a fan, personally. I'm not really into pain; even if a partner specifically requested it, I'd be uncomfortable doing it. If I want to increase sensitivity, I use lotion or baby oil (or something more edible, if I plan on using my tongue). I can understand how others might be into it, though. It's got that same sort of almost-sexy quality to it as a good ass paddling; not a turn-on, exactly, but it's still kinda hot. XD