And give us our daily sex (1979)

A pair of sexy bisexual nurses live in an apartment building, one floor up from a middle aged couple and their son albert, who is busy putting his new science projecta periscopeto good use by spying on the lingerie wearing lovelies meanwhile, albert’s mother is being even naughtier than her precious boy, sneaking off for some extra marital action while her hair obsessed husband is at the salon, having his follicles tended to