Watch Big Mamma's Boy (2011) : Full Movie Online Free Big Mamma's Boy follows the story of Rocco as he struggles to choose between the love of his life, Katie and his doting, over-protective Italian mother. Fun, heart-wrenching and poignant, this spirited romantic comedy explores Australia's multicultural nuances with hilarious results and goes to show that being a big mamma's boy is a lot tougher than it sounds.