Young buck seems extremely excited but it's put on (6)

I believe the answer is:

staged

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'put on' is the definition.
(both can mean fake or affected)

I don't understand how the remainder of the clue works.

(Other definitions for staged that I've seen before include "Presented a play" , "(Of play/opera) mounted" , "Orchestrated" , "Put on as theatre would" , "Get ads (anag) - performed" .)

I've seen this clue in The Irish Times.

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