Stupid and awkward, like Pinocchio (6)

I believe the answer is:

wooden

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'like pinocchio' is the definition.
(I've seen this in another clue)

I don't understand the rest of the clue.

(Other definitions for wooden that I've seen before include "... Heart (Elvis Presley song in G.I. Blues)" , "Stilted; made from tree" , "Unconvincing (of a stage performance) - made of oak?" , "Lacking ease or grace, like a tree?" , "Stiff, awkward" .)

I've seen this clue in The Guardian.

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