Some Mothers Do 'Ave 'Em - Season 2 - Eps 4: Frank and Marvin
Betty reveals that she's pregnant. Frank goes off to a holiday camp for an interview as a ""bluecoat."" Frank runs through his act as a ventriloquist, using a dummy called Marvin the Monkey. Unfortunately, Marvin's head gets damaged, so Frank replaces it with a doll's head. The manager wants a singer, so Frank gives him an awful rendition of ""Early One Morning"". He finishes his act (and his chance of getting the job) by accidentally setting off a firewaorks display from the back of his coat.
About Some Mothers Do 'Ave 'Em

Title: Some Mothers Do 'Ave 'Em
First Air Date: 1973-02-15
Last Air Date: 1978-12-16
Status: Ended
Rating: 7.6/10 (from 44 votes)
Language: EN
Seasons: 4
Total Episodes: 19
Network: BBC One
Genres: Comedy
Production Companies: Unknown
Synopsis
Meet Frank Spencer, an eager young man trying to find his way in the world. He's enthusiastic, well-meaning... and disaster-prone.
Cast

Michael Crawford
Frank Spencer

Michele Dotrice
Betty Spencer