He's jolly bony! (5)

I believe the answer is:

roger

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'he's' is the definition.

I cannot understand how the rest of the clue works.

(Other definitions for roger that I've seen before include "... guy" , "Boy's name - message understood" , "- - Moore (007)" , "Romeo's predecessor" , "Have sex" .)

I've seen this clue in the Evening Standard.

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