The Nun Crashers

This original holiday musical by David-Matthew Barnes involves a couple of boy-crazy girls who masquerade as nuns to chase a pair of boy-crazy boys to an all-boys Catholic school. Pop songs mix with Christmas favorites; a highlight is three gay Catholic schoolboys singing “(What If God Was) One of Us.” F, Sa 8pm; Su 2pm. Through 12/19. $15-$17. The Lambda Players, 1127 21st St.; (916) 444-8229; www.lambdaplayers.com.