Lol. No, it's a good point. Perhaps a Visa or Mastercard gift card designated for that purpose would be better. And yes, you absolutely have to have a relationship with your kids that allows open conversation, and no judgement. It also means sharing with them your early struggles, concerns, and explorations.
My daughter is 16 and not yet sexually active. Like most young women, she has a minor fear of sex because of all the talk from classmates about pain when you lose virginity. So we talked about it, and I told her how it was for me and then told her about this idea I'd gotten out of a stupid romance novel. And how much I wished I'd known about that then, because then it wouldn't have been painful, and I wouldn't have been so worried about it.
So, we have that relationship. Even so, yes, it was embarrassing for her and she declined the offer. But it wasn't like, OMG I want to die; she was grateful, but shy l, and ultimately not ready yet.
That's okay, because either way it's her choice and she's able to make an informed one because I don't hide things or shame or make moral absolutes about sex with her.
She did say she would keep it in mind. And a couple of days later, she asked if it was an open offer and asked about a website. The gift card alternative is actually her idea. That way she still has some measure of privacy about it.