Best sit around and not continue (4,2)
I believe the answer is:
stop it
'not continue' is the definition.
I don't know anything about this answer so I can't judge whether this works.
'best sit around' is the wordplay.
'best' becomes 'top' (top can mean the very best).
'around' means one lot of letters goes inside another.
'top' inserted within 'sit' is 'STOP IT'.
'and' is the link.
Can you help me to learn more?
(Other definitions for stop it that I've seen before include "Desist!" , "Don't" .)