Season 3 · Episode 11
Bluey
Dad agrees to play Sheepdog with Bluey and Bingo to stop them from disturbing Mum who is taking a well-earned rest. But looking after a sheep is harder work than they expected.

The standard way to render a knock-knock joke opener in Latin American Spanish. Also used to represent the sound of knocking on a door.
A single-word reassurance meaning the speaker will handle something so the other person does not have to think about it. More dismissive of worry than 'no te preocupes', which focuses on the feeling. Common in everyday Latin American speech.
The suffix -oso/-osa attached to a decade ('ochenta' = the eighties) creates a casual adjective meaning 'very typical of that era'. The result is not predictable from standard Spanish grammar and signals playful, informal speech.