This FA was such a pain in the neck. I am 19 years old but I have never ever have an FA ask me what my age was on an international flight to see if I was eligible for alcohol. Heck, we were in air and not even technically in the States. I asked for beer but she asked me how old I was. And I said 19. She told me that only if you're 21 over can you then get alcohol. She argued that we were coming from the States - but I told her we were going to Singapore!!!! Urgh.