Crossword Genius

Ridiculous poser dials oaf in happy state of ignorance (5,8)

Ross

I believe the answer is:

fools paradise

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

'happy state of ignorance' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.

'ridiculous poser dials oaf' is the wordplay.
'ridiculous' is an anagram indicator.
'poser'+'dials'+'oaf'='poserdialsoaf'
'poserdialsoaf' is an anagram of 'FOOLS PARADISE'.

'in' is the link.

Can you help me to learn more?

(Other definitions for fools paradise that I've seen before include "Ill-founded state of happiness" , "Illusory state of wellbeing" , "Deceptively happy state" , "Happy state while ignorant of potential trouble" , "State of ignorant happiness" .)

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