Most Helpful Guy
You're over 18, don't worry about what your mother says. haha.
I recommend not getting one where anyone can see it- it makes getting a job more challenging, and people will treat you differently. I have one going around my wrist and have to wear long sleeve shirts to work everyday.
I would suggest you get it around the hip area, back, or upper thigh (I know a lot of girls who have one on their thighs- seems a little weird to me though).
Just make sure it's a tattoo you want, so you won't regret it.