Dad, it’s fail-safe, available and completely healthy (2,3,2,1,6)
I believe the answer is:
as fit as a fiddle
'dad it's fail-safe available and completely healthy' is the definition.
I don't know anything about this answer so I can't tell whether this works.
'dad it's fail-safe available and completely healthy' is the wordplay.
'dad it's fail-safe' can be anagrammed to 'AS FIT AS A FIDDLE'.
But, I am not clear how the anagram is indicated.
Can you help me to learn more?
(Another definition for as fit as a fiddle that I've seen is " in form!".)