They will be themselves! (4)

I believe the answer is:

boys

'they will be themselves' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for boys that I've seen before include "Beach --, group" , "Lads" , "They will be themselves, it's said" , "Male children" , "Young males" .)

I've seen this clue in The Telegraph and the Evening Standard.

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