Stop messing with that tie and belt buckle (3,2,2)
I believe the answer is:
let it be
'stop messing with' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.
'tie and belt buckle' is the wordplay.
'and' is a charade indicator (letters next to each other).
'buckle' indicates an anagram.
'tie' after 'belt' is 'belttie'.
'belttie' is an anagram of 'LET IT BE'.
'that' acts as a link.
Can you help me to learn more?
(Other definitions for let it be that I've seen before include "Beatles record" , "Single" , "Beatles album" , "Beatles song - don't interfere!" , "title?" .)