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.
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.
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.