First of all, let’s try to avoid American-bashing, and stay respectful to everyone.
I’ll start: for me it’s the tipping culture. Especially nowadays, with the recent post on !mildlyinfuriating@lemmy.world with the 40% tip, it just seems so weird to me to have to pay extra just so that menu prices can stay low.
I was really surprised that quite a few states have a minimum marrying age of 0. And apparently, it’s more common than you’d expect for girls as young as 14 to get married, often to far older men.
18-21 is very common here in the South. I haven’t heard of younger personally. But I’m not rural. Know of some towns very religious and inbred, I’m sure it’s happening there.