If look closely there is a security guard that walks up with Nate. That's a smart move on Kimmel's part, because you never know when Nate might snap and punch a dude on the street.
You also have to give props to Nate for doing it in the first place. It can't be easy listening to dudes talk shit about how a guy you already beat is going to kick your ass.
Especially when you're a crazy person.