Porridge? Oat diet my cousin arranged (9,6)

I believe the answer is:

situation comedy

I'm a little stuck... Click here to teach me more about this clue!

'porridge?' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.

'oat diet my cousin arranged' is the wordplay.
'arranged' indicates an anagram (letters rearranged).
'oat'+'diet'+'my'+'cousin'='oatdietmycousin'
'oatdietmycousin' anagrammed gives 'SITUATION COMEDY'.

Can you help me to learn more?

(Other definitions for situation comedy that I've seen before include "Spoof" , "Bottom perhaps" , "Funny series on radio" , "TV series noted for its humour" , "Friends in this" .)

I've seen this clue in The Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.