. >> reporter: trevor mulligan quit his job in advertising almost five years ago to stay home with his sons. his wife is a portfolio manager for a law firm. >> those are the rules of years ago. i think we've taken such strides and have grown so much that we kind of need to get over that. >> reporter: these three l.a. stay at home dads do everything that moms do, with pride. sam turner, who regularly hosts playdates in the the home he shares with his wife a preschoolteacher, says he would never dream of sending her an sos. >> we can be there in five seconds. if they need anything if he needs food i make him food. if he needs his diaper changed i can do it better than my wife. >> reporter: the stereotype of the hapless mr. mom is outdated. these days you're more likely to see dad owning the stroller like this scene from "what to expect when you're expecting." most working dads are accustomed now to doing their share. tonight i'm on homework duty for my 6-year-old libby. >> this one? that's great. okay, ben, your turn. >> reporter: all the while keeping little ben busy making sure he eats