As of 2019, checking people's IDs for whether they're 18 or not is really easy as you just need to check whether they were born in 2000 or before. amirite?

I was born 2001 and I'm 18...

I used to work in a club and people would borrow a brothers ID ect

Best way to tell if it was their ID was to ask what star sign they were.

"Ummmm Leo I think"

No entry

2001 now