David Jacob "D.J. '' Conner is played by Michael Fishman (Sal Barone in the pilot episode). Born in 1981, David, better known by his initials D.J., was the youngest of Roseanne and Dan 's children and their only son until the birth of Jerry Conner, in 1995. D.J. is more simple - minded, naive, and boisterous than his older sisters, who frequently taunt him. In the first episode of season three, it is stated that while Becky and Darlene were planned pregnancies, D.J. was a "surprise ''. As he grows up, D.J. 's storylines deal with more mature topics such as masturbation and human sexuality. Later episodes depict D.J. as having a close, brother - like friendship with Becky 's husband Mark. He is also shown to develop an interest in filmmaking: he repeatedly asks Darlene if he can videotape her giving birth. He was one of the only characters that was n't changed in the final episode of Season 9, which has since been ret - conned out of existence.
what does d j stand for in roseanne
David Jacob