Monday night just got a little funnier with the debut of Sister Groundling, a brand-new bag of sketches, improv and other wackiness, all performed by women of the esteemed Groundlings Main Company, including Lisa Schurga, Annie Sertich, Stephanie Courtney, Edi Patterson, Ariane Price, Jill Matson Sachoff and Charlotte Newhouse. Then everybody gets their periods at the same time and goes home.

Mon., July 20, 8 p.m.; Mon., July 27, 8 p.m., 2009

LA Weekly