Tip of the nose, super sensitive so will hurt like hell, weird shaped so hard to do anything good, and it's right in the centre of your face so it's a jobstopper.
My best friend's birth mother (he was adopted) has a tattoo of a butterfly on her butt which anyone only knows about because she wears her pants low enough you can recognize antennas.
I knew a guy who we all called "Punkin" because he was the singer in a punk band and had a tattoo of a pumpkin on his butt. He showed literally everyone that tattoo. When I was introduced to him, he said, "you want to know why they call me that?" And then immediately pulled down his pants to show me his butt tattoo. I then watched him do it 3 more times as he met new people.
I watched a video from Gibi ASMR, who's getting tats all over her legs. For the one behind her knee, she spent time after with her leg in a splint, 'cos she was worried that bending her leg would affect the tattoo whilst it was healing.