Stephanie jokes that she used to change Michelle's diapers, and that she changed so many that she felt like there were two of them. Of course, in the original series, Michelle was played by twins Mary Kate and Ashley Olsen.
When Jackson loses his room, he says, "First dad dies, people move in...and to top it off, I lose my room." DJ begins to comfort him, telling him he has a house full of people who love him. In the first episode of Full House, DJ is upset to lose her room, and Stephanie moves in with her. She says close to the same thing, and her father Danny comforts her the same way DJ comforts Jackson saying, "You have a house full of people who love you."