The low-budget second part of a movie theater's double feature. Back in the days of double features, movie houses showed two very distinct types of films. A movies were the hits—“Gone With the Wind,” “Casablanca,” “Citizen Kane,” “The Wizard of Oz”—the ones that drew patrons to the movie houses. Then there were Westerns, horror flicks, and science fiction movies that didn't cost very much to make (they were often in black-and-white). These B movies tended to be shown before the main feature; otherwise, people would leave after the A picture and then feel they hadn't gotten their admission money's worth. As double features disappeared and the cost of filmmaking grew, the curtain went down on the B movie genre.

A pornographic film. Why off-color movies were called “blue” remains a matter of conjecture. Although one definition of “blue” has been “lewd” since the 19th century, its application to movies might have referred to the 19th-century Blue Laws morality codes and state and local laws based on them, of which dirty movies would certain run afoul. Other explanations include the bluish tint of the early cheaply made black-andwhite movies, and the bluish cigarette and cigar smoke haze in rooms where men gathered to watch such films (the get-togethers were in fact known as “smokers”). “Blue” faded over the years and was replaced by “dirty movie, “adult film,” “skin flick” and “hard- or soft-core porn.”