El sexo sentido

This is a Mexican Sexy Comedia, a movie that tries to show as much full frontal female nudity as possible, and largely succeeds. There were a lot of Mexican movies like that around that time, and this is arguably the best. The comedy is debatable, and possibly more enjoyable if you're a native Spanish speaker, but the female nudity is frequent. Near the end of the movie, the main characters decide that they need to visit a nudist camp, and that starts a delightful 10 minute scene with virtually constant full female nudity. FWIW, the men in the nudist camp are not actually naked, they wear modesty patches. This is a great movie for girl-watching or to try to improve your High-School Spanish.

A company called OXXO Films made a version that is viewable and better than nothing, but has very low resolution.

A company called Grupo Nueva Imagen LLC released a DVD set called "6 SEXY COMEDIAS de ALFONSO ZAYAS" which contains this movie along with 5 others, and this is a much clearer version.