The context of the following conversation is Kendal knew he had drank to much to drive home from the party and yet took another drink.:
Kendall says I just wanted another swig of the vodka before I drive home from the party.  That was good stuff..
The friend responds You already had too much to drink, didn't you?.
Kendall responds When you left, it was already too much.  Then I kept drinking..
The friend responds Do you know when to stop?.
Kendall responds No, I don't.  I drink until I pass out..
The friend responds That's not healthy..