Lawbreaking shot, perhaps before teeing off (5-7)
I believe the answer is:
Here is my best explanation:
'lawbreaking' is the definition.
'shot perhaps before teeing off' is the subsidiary indication.
'shot perhaps' becomes 'drink'.
'before' is a charade indicator (letters next to each other).
'teeing off' becomes 'driving' (golf term).
(Another definition for drink-driving that I've seen is "At the wheel under the influence of alcohol".)