People don't always check IDs that well, even people whose job is 90% checking IDs. A friend of mine is a bouncer who has memorized every state's ID (he catches a lot of IDs that scan at other places) and usually gets multiple fakes a night while working.

He got an obvious fake from a blond 6'2" guy. He gave it to our dark-haired 5'7" friend with a very different facial structure and told him to try it at several other bars in the area. Said friend got into every bar.