Had an older brother who never drank and I use to steal his ID then put it back in his wallet. Eventually, I figured out it was pointless to keep putting it back and just stole it. It also helped that I looked just like him. Only got denied once, but that was because I went to school in PA so as soon as someone saw it was a Kansas license they immediately assumed it was a fake. Still, I was essentially 21 at age 17...it was freaking awesome.
In high school we bought everything from Grey Goose to St. Ives and Old English depending on what we could afford. I remember a guy at one store laughing at me cause the one day I bought grey goose and then the next Mickey's. The one downside was in high school I use to get like grocery lists of booze from kids at school for what they wanted for the weekend and that got old. I'd charge them, but it was still a pain sometimes.
Then when the dumb thing expired. I was at a place here in PA and the lady behind the counter said she couldn't sell to me because it was expired, I explained I didn't know where the DMV was and couldn't get a new ID. She gave me directions to the local DMV and then sold to me anyway. Thankfully I finally turned 21 about a year after his ID expired. Funny story, then early on using my real ID someone asked me about my birthday and I said my brothers and then had to explain that I had got used to using a fake ID and got the birthday's mixed up. I showed the guy another form of ID and it was all good. He got a pretty good laugh out of it.