Some guy walked up to a bouncer, and also professional MMA fighter, John Hernholm, to pick a fight. He's gotta be drunk. I mean, why would he take his shirt off and confront a 320-pound dude just to prove his point? At some point, you've gotta just walk away.
Let's agree on one thing here, fighting on the street is dumb. There are a lot of factors that need to be considered here. First off, there are no rules when you're fighting outside of the ring. That also won't be a ref there to bail you out when you're not definding yourself properly. There are way too many reasons for us to list here, but you get the idea.