The most I would get is a quote, but I probably won't since I HATE tattoos.
I would never tattoo her face, wtf. Everytime I have sex the person would be weirded out. I would be weirded out if I had sex w/ someone and they had a tattoo of Britney Spears or Lady Gaga's face or whoever.
I'm getting Born This Way and Free Bitch. Which is not just Gaga related but also something that means a lot to me. But I wouldn't get the face of my fav tattooed.
However, on the very off chance I would, I'd probably get "Look up; the sun is just a cloud away" from Get It Over With. I don't know why I like that quote so much, but I somehow feel like it means a lot to me.