ONE of the catchiest new songs out there is “The Night I Punched Russell Crowe,” by Gaelic Storm, who played in the movie “Titanic.” Band member Patrick Murphy claims it’s based on his bartending days, when he ordered the hot-tempered Oscar winner to put out his cigarette or be ejected. The tune goes: “He squared right up to me, somewhat in surprise. Then he narrowed up his gaze, shot me daggers with his eyes. ‘If you think you’re man enough, go ahead,’ he said. I was scared for me life, so I dawked him in the head . . . He lifted up his hands, put them to his nose. Blood was running through his fingers, dripping on his clothes. His bodyguards ran up. ‘Get him,’ shouted Crowe . . . ‘You can’t hit me, I’m the Cinderella Man, I’m the Master and Commander, I’m Australian . . . Don’t you know I’m dangerous? I’m the outlaw Ben Wade. I am Maximus!’ ” Crowe’s rep, Alan Nierob, tells us the incident never happened. What does Crowe think of the song? “I don’t know if he knows anything about it. Who cares?”