No, No, Lady (1931)

When the story begins, a couple are rehearsing a play...one that is REALLY hard to believe. In the play, the cheating wife convinces her mousy and ineffectual husband to not only condone this affair but help pay for the lovers to run off together!! The director things the whole thing is unbelievable, so the couple from the play decide to act it out with her real life husband...the mousy and ineffectual Ed Martin (Andy Clyde).