Hay que romper la rutina (1974)

Friends Alberto and Jorge, who work together and live in the same building, are married to two sisters (Ethel and Gogó). Noticing that their sex life becomes boring, they cheat on them with co-workers. This is discovered and they are fired. Then, they get employed in a beauty institute, where they have many women at their disposal. Their wives learn of this mischief, and go to look for them at the institute, generating hilarious situations.