‘The Underpants’ at The Main 

8 p.m. Sept. 13, 14, 20, 21; and 2 p.m. Sept. 15, 21, 22 

Steve Martin’s hit off-Broadway play, “The Underpants,” is a madcap romp about a conservative couple in 1910 Germany who face scandal when the wife’s bloomers fall down in public. Suddenly, two infatuated men arrive to rent their spare room. Oblivious of their lusty intents, the husband rents to them both, igniting a riotous play on sexual conventions as the naïve wife explores her newfound power. (Rated PG-15.) Written by Steve Martin and presented by The Tavern Brawlers. Tickets $18-$22 at AtTheMain.Org.