Dax Shepard has some unorthodox rules when it comes to his and Kristen Bell's kids using curse words. "I fully swear in front of my kids. They are allowed to swear, not with impunity, but when it's called for, and they land it, and it's in the house and not out at a restaurant, it's OK," Shepard, 50, explained during the Monday, July 28, episode of his "Armchair Expert" podcast. "My defense of it is, I just told the girls, like, 'Hey, these are noises that come out of your mouth, and you assign what they mean to you,'" he continued.