Looks like someones having a bit too much fun. And what's up with the person with you? lol
He was pretending to be gollum. if you ever go to the City of Dreams casino, look for the bar at one end of the casino floor. Acquire a drink called the "Krakatoa". Do not wait for fire to go out, drink it. Order shot of 151. Head to pool and/or blackjack. Profit.