Don’t bring your club

When Defending the Caveman first hit the stage, the idea that we had a whole lot in common with our Paleolithic forebears was an odd one. These days, we more readily recognize the power of our past as hunter-gatherers to affect our behavior (think “caveman diets” of rare meats and raw veggies, or the “don’t wash your hair, it’s bad for it” beauty plan), but that doesn’t make this show less fun. California Musical Theatre brings Rob Becker’s Defending the Caveman for a summer run at the Cosmopolitan Cabaret on K Street, where a “caveman”—in the sense that he likes his “man cave”—will explain how our basic human natures (“caveman” and “cavewoman”) determine the way our relationships play out. Four actors—Cody Lyman, Ben Tedder, Paul Perroni and Vince Valentine—will take the role over the show’s run. OK, so it’s not the best anthropological approach, but it is funny, especially if you’ve ever watched men grilling.

Defending the Caveman, 7 p.m. Wednesday, 2 p.m. and 7 p.m. Thursday, 8 p.m. Friday, 2 p.m. and 8 p.m. Saturday, and 2 p.m. Sunday; $33-$43. California Musical Theatre at the Cosmopolitan Cabaret, 1000 K Street; (916) 557-1999; www.californiamusicaltheatre.com. Through September 11.