Kiki & Herb: Alive on Broadway Helen Hayes Theatre -
I might have an opportunity to see their show. Is this something a 19 year old girl with eclectic tastes might enjoy?
Oh, definitely.
IRL, Herb’s sister is an old college friend of mine - it is very entertaining, but lots of sidelong references to the ups and downs of being a near-star singer - to describe Kiki as melodramatic doesn’t quite do it justice…
Is she hot?
Why yes… she is my daughter, thank you for asking!
If you decide not to take her, you can take me.
Hmm…in my neck of the woods, the question “is she hot,” when the she in question is the deponent’s daughter, is typically followed by a vicious beating of the interrogator. But maybe we’re psychopaths down here. 
I didn’t make the context clear, so NCB’s inquiry while somewhat presumptuous, deserves clarification vs psychopathic correction.
Oh, I know that. I was jesting. I’m a jester. Give me a monocle, a cat, and $10 billion dollars, and I’m a Batman villain.
Hell, give me a monocle, a cat, and $10 billion dollars, and I’m anything you want me to be! 
What’s not ok to take a 19 year old to see?
It’s less an issue of moral appropriateness, and more one of whether a bright 19 YO would “get it” and enjoy it. There are some shows that are pretty hardcore & adult oriented, and would really require some mature some life experience & adult context to appreciate them fully.
Pfft. How will a 19 get same if they don’t get out and experience it?