Unable to cope with a fork supper? (8)
I believe the answer is:
spoonfed
'unable' is the definition.
The answer and definition are different parts of speech. However, past participle verbs and adjectives occasionally mean the same thing.
I cannot understand how the remainder of the clue works.
(Other definitions for spoonfed that I've seen before include "Spoilt" , "Given too much information" .)