Joke, little one (3)
I believe the answer is:
kid
I believe this clue is a double definition.
'joke' is the first definition.
(I've seen this in other clues)
'little one' is the second definition.
(I've seen this before)
(Other definitions for kid that I've seen before include "Goat - boy" , "Jest" , "Schoolboy" , "Playfully deceive" , "Sort of gloves" .)