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.
26/f/140 lbs/5'3" - a bit nervous, but here I am baring my least favorite body part: my uneven, odd looking breasts (changed due to weight loss) AND my favorite body part: my very nice butt
[M] The part of my body that gives me the most confidence/insecurity issues. I'm hesitant to post this, but I know there are others out there that suffer from acne too.