To those under the age of 60, it should be noted that the title of this lively Universal filler was inspired by a popular song of 1941. Carrying over their antics from RKO Radio's "Mexican Spitfire" series, Lupe Velez and Leon Errol star respectively as Havana nightclub entertainer Madame La Zonga and South American aristocrat Senor Alvarez. What the audience knows but La Zonga doesn't is that Alvarez is a phony, who's no more Latin than a Coney Island hot dog.