Here is a question for the rabbis: Can a teenager acting out a bar mitzvah on stage actually get credit for becoming a man? What if he has rehearsed for months? And what if he reads a real Haftorah? Ricky Ashley, the 17-year-old who stars in the new musical "13," never had a bar mitzvah. He was too busy acting and never found time to prepare. But now, Ashley is playing Evan Goldman, a 13-year-old who has his coming of age ceremony after moving to a new school in a new town, where the kids confuse "bar mitzvah" with "Bon Jovi."