I don't have any tattoo or piercing either but got pierced by accident a couple of times also. One that springs to mind now was when I was 16/17 y/o some dude threw a dart in my right hand whilst I was getting my darts out of the dartboard in some bar in Amersfoort.
And no kid ya.. with the dart still stuck in the back of the same hand I punched the fucker in the face tantrum style after I immediately knew that it wasn't by accident this time.
Another pers. trivia.. I'm not as aggressive or boldly acting as I was then, nowadays.