"Pre-Code Hollywood refers to the era in the American film industry between the introduction of sound in the late 1920's and the enforcement of the Motion Picture Production Code (usually labeled, albeit inaccurately after 1934, as the "Hays Code") censorship guidelines. Although the Code was adopted in 1930, oversight was poor and it did not become rigorously enforced until July 1, 1934. Before that date, movie content was restricted more by local laws, negotiations between the Studio Relations Committee (SRC) and the major studios, and popular opinion, than strict adherence to the Hays Code, which was often ignored by
Beginning in late 1933 and escalating throughout the first half of 1934, American Roman Catholics launched a campaign against what they deemed the immorality of American cinema. This, plus a potential government takeover of film censorship and social research seeming to indicate that movies which were seen to be immoral could promote bad behavior, was enough pressure to force the studios to capitulate to greater oversight."
So, with that history in mind here is a video that shows some of the wily ways Hollywood showed some skin in the good old days!