Mind your language season 3 Episode 2: Danielle brings her host family’s baby to school. He goes missing but is found by Miss Courtney and taken to her office. While Miss Courtney and Mr. Brown are gone, Gladys finds the baby and takes him to the tearoom for some milk, and Mr. Brown goes out the window thinking the baby crawled out.

He gets locked outside and nearly falls off the ledge, but gets into his classroom through the window. The baby is with Danielle. Miss Courtney comes into the classroom and asks why the baby is there. Mr. Brown answers and the show ends.
Quotes
(Juan meets the Barkley baby.)
Juan: Eh…nice little boy.
Ranjeet: How are you knowing he’s a little boy?
Juan: Easy. He’s got what every little boy has: blue clothes.