Drink after drink leading to male camaraderie (4,6)
I believe the answer is:
team spirit
'camaraderie' is the definition.
(I've seen this before)
'drink after drink leading to male' is the wordplay.
'drink' becomes 'tea' (tea is a kind of drink).
'after drink leading' becomes 'spirit' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'to' says to put letters next to each other (I've seen this in other clues).
'male' becomes 'm' (common abbreviation).
'spirit' after 'm' is 'mspirit'.
'tea'+'mspirit'='TEAM SPIRIT'
(Other definitions for team spirit that I've seen before include "Esprit de corps" , "feeling of camaraderie" , "displaying camaraderie" , "Cooperative had plenty of?" , "Morale" .)