Body Piercing Guidelines or "I want a piercing, now what"
If Nevada and/or Las Vegas has parental consent laws for piercings for children under a certain age, no respectible and safe piercings salon will do piercings without that consent. Getting pierced anywhere else would mean much greater risk of infections and poor work.
Unlike piercings, tattoos are only available to adult (legally). There is no age for parental consent in regards to tattoos in the state of oklahoma. Until you're 18 you can't legally get one.
I believe that it is the same anywhere in the US. 16 with parent/guarding consent, 18 without it. That goes for any piercings, except ear lobes which can be done with a gun (the only piercing that is done with a gun). But you'll still need parental consent.
In most places, you have to be 18 years old. If you are younger, then you need parental consent. But I highly suggest researching getting a piercing before you decide that's what you want.
totally legal with parental consent
Most states prohibit minors under 18 from getting piercings, though some allow it with parental consent. See related links for laws in each US state.
It depends on the state, but probably with parental consent. The prospect of a teenager getting parental consent is not an easy task.
18 without parental consent.
Legal consent is 14 years of age. Tattoo shops will dictate ages they feel are appropriate. Most cases 18 years old is minimum without parental consent and 16 with parental consent.
18 or with parental consent.
The legal age for getting a tattoo without parental consent in Israel is 18 years old. Individuals under 18 require parental permission to get a tattoo in Israel.
In most places, you have to be 18 years old. If you are younger, then you need parental consent. But I highly suggest researching getting a piercing before you decide that's what you want.