Enjoys drink after chum's come around (4,2)
I believe the answer is:
laps up
'enjoys' is the definition.
(lap up can mean to eagerly enjoy)
'drink after chum's come around' is the wordplay.
'drink' becomes 'sup' (to sup is to drink).
'after' means one lot of letters go next to another.
'chum' becomes 'pal' (synonyms).
'come around' says the letters should be written in reverse (I've seen 'comes around' mean this).
'pal' written backwards gives 'lap'.
'sup' put after 'lap' is 'LAPS UP'.
(Another definition for laps up that I've seen is " Relishes or delights in".)