It depends.A tattoo hurts more than getting a tongue ring,in my experience.But getting my nipples pierced hurt WAY more than a tattoo! Especially since after they're pierced,they're eternally hard and rubbing against your shirt even right after getting pierced.
Don't ask me how,but I never realized getting your nipples pierced would mean they would be hard all the time.ud83dude02ud83dude02 I took them out within a day or two.Still would rather get an hour-long tattoo than do that again.