The Solitary Sin (1919)
Bob, John, and Edward--three young boys growing up in the same neighborhood--have vastly-different experiences with sex. Bob's father patiently explains "the birds and the bees" to him, and even takes him to a hospital to see the effects of venereal disease.
Actors: Jack Mulhall, Helene Chadwick, Gordon Griffith, Leo Pierson, Pauline Curley, Charles Spere, Irene Davis, Anne Schaefer, Irene Aldwyn, Emmett King
Country: United States of America