Ridicule drinks, say (5)
I believe the answer is:
tease
'ridicule' is the definition.
(I've seen this before)
'drinks say' is the wordplay.
'drinks' becomes 'teas' (tea is a kind of drink).
'say' indicates a 'sounds like' (homophone) clue.
'teas' is a homophone of 'TEASE'.
(Other definitions for tease that I've seen before include "Playfully provoke" , "Cod" , "Chaff" , "Banter, make gentle fun of" , "Make fun of; comb wool" .)