I've received a few brutal spankings. I started meeting people through Craigslist. There's a guy who would spank me with his belt. He'd make me choose one, and then spank me with it. The sessions would involve 200+ licks.
I would hook up with another guy in the woods. He had some kind of metallic cane-like thing. I could never really see it, but whatever it was, it was brutal. I remember the first time I was covered in sweat, and I had bruises for weeks. I was about done after the first lick, but I just kept taking it.
The second time I met this woods-guy he brought an electrical cable. I was done after a handful of licks. It did pierce the skin.
My boyfriend now spanks me, which is much safer He likes to use a bamboo cane.