I got some similar questions when I worked at Borders:
Woman: Hi, my daughter is going to come by on her way home from school to buy a book. But she seems to buy books with sex in them and she's only twelve, so can I ask you to keep an eye out for her and make sure she doesn't buy anything inappropriate for her age? I can give you a list of authors she's allowed to buy.
Me: With all due respect, would it not be easier for you to come in with your daughter?
Woman: Certainly not. She's a grown girl, she can do it herself.
Weird things customers say in bookshops.