Witty ones (4)
I believe the answer is:
wags
'witty ones' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for wags that I've seen before include "Moves briskly to and fro with swag (4)" , "Moves to and fro like dog's tail" , "Habitual jokers" , "group with team players, esp when travelling" .)