Down second flipping hot drink (6)
I believe the answer is:
mopish
'down' is the definition.
Both the definition and answer are adjectives.
Perhaps you can see an association between them that I don't see?
'second flipping hot drink' is the wordplay.
'second' becomes 'mo' (both are short periods of time).
'flipping' says the letters should be written in reverse.
'hot' becomes 'h' (abbreviation, eg on taps).
'drink' becomes 'sip' (sipping is a kind of drinking).
'h'+'sip'='hsip'
'hsip' backwards is 'pish'.
'mo'+'pish'='MOPISH'
Can you help me to learn more?
(Other definitions for mopish that I've seen before include "Somewhat depressed" , "Listless" , "dejected" , "down in the dumps" , "low on spirits" .)