Yea, elephants do drink.  At least they do it in India.
What did they drink? 
Rice Beer.
How did they get rice beer, you may ask.
Well, in the villages, where beer is brewed, of course.
But why?  Why don’t they stay in the forest?  There are bananas, juicy leaves to eat, and mates to play with.
Good question.
The reason is us–human beings.
We have detroyed the forest–their homes. 
Like people in searching of new homes, the elephents went to the villages.   And there they found the lovely creation of human beings–beer.
They got drunk, and accidentally killed some people–what? Like you humans don’t do this?
You kill your own species even when you are sober.