How bad does lip piercings hurt?

1.) I did my snake bites myself with a giant safety pin when I was 16 and it didn't hurt at all, so I imagine getting it done professionally would be a breeze. I also pierced my nose with the same type pin when I was 12. Never had to deal with infection or swelling. I'm 19 now and still have them all. But I guess every ones different.

2.) YES and if it is not done right it can hurt FOREVER

Mine did not hurt that much when i got it pierced, I think it hurt more when it was swollen. But yes, it will hurt.