It really depends on the person.I got both of mine done at the same time and it hurt so bad I almost fainted, but some people say they barely felt theirs. It depends on your tolerance for pain.
Lol, no (: Probably only right after you get it done or for a few weeks after. If you've had them for a couple weeks you don't even notice them (me and my bf both have them)
#1- why on earth would you do that? #2 no, urine is consisten of the toxins that the body excretes and they're all bad for you. There is a certain way you can drink it, but I don't know why you would want to...