It's crazy drinking here (6)
I believe the answer is:
saloon
'drinking here' is the definition.
(place where people drink)
'it's crazy' is the wordplay.
'it' becomes 'sa' (old-fashioned abbreviation for sex appeal).
'crazy' becomes 'loon' (I've seen this in another clue).
'sa'+'loon'='SALOON'
(Other definitions for saloon that I've seen before include "Car; public room" , "Pub room" , "US bar - type of car" , "Describing a bar - describing a car" , "Boozer or shape of car" .)