Watch Babysitting the Baumgartners for Free: How to Stream the Movie Online at 123Movies. . The best-selling beloved novel comes to life in this epic erotic feature film about a naughty menage a trois between a married couple and their sexually curious babysitter. Seduction under the sun sizzles when Doc and Carrie Baumgartner invite their babysitter, Ronnie, to a family getaway at their beach house.