How Kristen Bell Helped Dax Shepard Prepare for His Nude Scene (VIDEO)
10/14/2014 AT 05:45 PM EDT
The actor opened up about how he prepared to bare his butt in This Is Where I Leave You during a Monday night appearance on Conan. As it turns out, the nude scene's success is all thanks to some awkward grooming by his wife, Kristen Bell.
"While I don't have a lot of hair on the cheeks, they're nice, you know, there's an ample amount ... there's a forest in the valley," Shepard said, with some delicate prompting from Andy Richter. "And my fear, my deep, deep fear, would [be to] look like there's a werewolf trying to escape my butt crack."
Sure, Shepard, 39, toned up with lunges and squats. But it's the soon-to-be mother of two who really got him camera-ready – and hair-free – with an "off-the-shelf electric razor."
"The beautiful Kristen Bell, that people can already not understand how she's with me, got the pleasure of [shaving me]," he said.
For more on the "vulnerable and weird" experience and what song Bell, 34, hummed as she buzzed away, watch the clip below.