Well, I do enjoy piercings, and tats, I love the type of pain that comes with tats which is why I would love to have more on my back. I only have two tats, one on my back and arm, small.
I wont tell you 'the' most painful....but the bar was about 6cm long!!!
The 2nd most painful, well, 'kids, don't read this' but I recently pierced both my nipples again because I got sick of them six months ago, so now the piercings go up and down instead of sideways. They look pretty cool though!
Actually, the 2nd most painful, when I got my left nipple professionally pierced, the girl wasn't that confident and she pushed it in a little, then TWISTED it in all the way....that was not good!!!