I was 14 and on holiday in Spain. I forgot the name of the studio, it was somewhere in Alicante. Just went in there, chose a design from the book (a 2" red rose) and got it on my shoulder. Since I didn't speak Spanish I had no idea about the aftercare. The guy didn't even ask for my ID.
It's covered now, with a huge piece which is even worse (because I did that when I was 18 and super smart, like everyone that age).
The next was at the age of fifteen, a tribal on my stomach that I drew by myself. It wasn't until a few years later when someone pointed out that it has a swirl in the middle which looks like a pretzel.. Yeah well, pretzel-belly. I lasered it several times to get it covered, but until now I have no idea with what to cover a stupid tribal going across my belly -.-