Yep. I remember a drunk fan in Philly fell from an upper deck in the late 70s or early 80s when I was a kid. Fat, no shirt, drunk. He was able to get up and walk out with assistance. And that really wasn't unique. People do foolish things like this all the time and it usually involves booze.
There is a theory that being drunk relaxes you to the point that some fatal impacts in non drunk people are survivable if you’re drunk as a skunk. Sometimes in fatal car crashes the drunk one is the only survivor.