Tattoo qustion?

I'm getting a tattoo and was wondering best place that cant see it. i'm 18 by the way but my dad doesnt want his kid aka me because you know how fathers are. I dont want him to be sad like I would tell him but when i do i dont want him to see it each time i go to see him cause i dont want to seem rude by showing it off. i dont want on my back lower back cause i dont wanna be labled a tramp