Go and act the fool (4,2)
I believe the answer is:
beat it
'go' is the definition.
(phrase used to tell someone to go away)
'act the fool' is the wordplay.
'act' becomes 'bea' (I can't explain this - if you can you should give a lot more credence to this answer).
'the fool' becomes 'tit' (I've seen this in other clues).
'bea'+'tit'='BEAT IT'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for beat it that I've seen before include "fly away" , "Sling your hook!" , "Scram, get lost" , "Clear off!" , "Make off hastily" .)