Even the best comedy film has its moment of terror. Just ask the director. Ax-wielding maniac on the loose? Nope. Brain-slurping zombie shambling into view? Wrong. The most nerve-numbing fright delivery system is the audience at a test screening for the film to which you've just devoted months or even years of your life. "You truly don't know until you put it before an audience whether you're funny or not," Tina Gordon Chism said. Chism directed the Tyler Perry-produced comedy "Peeples," which will open Friday in theaters across the country.