It might have been a tooth through the lip. I put one of my bottom canine teeth through my lip when I was a teenager in a skateboarding accident and it left a hole like in that picture just bellow the line of my bottom lip. The good news is that the scar healed... eventually. It took a good few years though.
It wouldn't surprise me if the bouncer has a ring though, they sound like a bunch of fckn unprofessional gobshites.
Oooh, just throwing in the Irish language as if it's nothing @raj808 😜 Gobshites...I love that word!