8 XXX : finger bone

X from http://www.reddit.com/r/Fingering/

imgur.com category @derpieness

Tattoos placed over bones and tendons (spine, neck, back of ankle), on body parts with relatively little padding (feet, hands, joints), and anywhere with loads of nerve endings (nipples, fingers, face) will be the most painful.

imgur.com category @FiP

Finger licking good

imgur.com category @bubblr