Well for me my neck is always good, I guess any pain if the person is vicious enough I just love being bit but who does like a little pray animal eaten alive. I have made myself bleed and I have had people scratch me till I bleed on my stomach, that left a scar, also my back but other then that nothing. Sigh the more I look into bdsm the more I want to do some but I just am too nervous to find someone. :/