Stop, son! Dad ordered a drink (6,3,4)
I believe the answer is:
scotch and soda
'drink' is the definition.
(Scotch-and-soda is an example)
'stop son dad ordered a' is the wordplay.
'stop' becomes 'scotch' (I've seen this before).
'ordered' indicates an anagram.
'son'+'dad'='sondad'
'sondad' anagrammed gives 'andsod'.
'scotch'+'andsod'+'a'='SCOTCH-AND-SODA'
(Other definitions for scotch and soda that I've seen before include "Do coach-stands (anag) - alcoholic mixture" , "Simple cocktail" .)