It's funny to me that my gut reaction was, "Oh. Why do they want that? Bouba would be such a weird tattoo compared to kiki."
I don't have tattoos. I don't really want them (I appreciate the artistry of them, but I can't stand seeing things on my skin). I don't know why I should care, never mind care the opposite way of most people.
Strangely, everyone I've asked says they would want to be Bouba. No one wants to be Kiki.