I also would err on the side of caution , If you really do want one have it so you can cover it up, no facial or neck ones!! , because you may want to get another job one day and believe me, Tattoo's do put prospective employers off,
I visit a relative in a old persons home, Sometimes Sitting opposite is a old man who is in a bad way , he has love and hate tattooed on his fingers , it looks so sad, he is not able to love or hate anyone now, but gives an insite into who he felt he used to be although it looks absolutely daft now...... its your skin , your look , do what you want .........