The Wanderer,
I think if crumpet wants to get a tattoo then that's up to her, you have a right to your own opinions but you don't need to sound so patronising. Crumpet is not a teenager and has wanted to get a tattoo for a long time so why shouldn't she. And she has already said it will be on her hip which is hardly an obvious, highly visible place now is it.
You are making yourself sound like an old fuddy-duddy before your time, so come on mate lighten up, life's for living.