Late Nite Catechismis an uproariously funny play that is part catechism class, part stand-up routine, where the irrepressible Sister teaches class to a roomful of “students.” Throughout the course of the play the benevolent instructor rewards audience members for correct answers with glow-in-the-dark rosaries and other nifty prizes. Naughty students may well find themselves on stage sitting in a corner reflecting their actions. Now in its 28th year in Chicago, Late Nite Catechism is a sharp satire, but never mean. It’s simply an evening of fun and laughter.