Hi,
I'm sure that Philip has given you the intended meaning.
However, here's another interpretation, from the running community.
You buy 4 bottles of beer.
You go with other competitors to a quarter-mile track.
You drink one beer. You run one lap.
You drink another beer. You run another lap.
You drink another beer. You run another lap.
You drink your last beer. You run your last lap.
The winner is the one who has the lowest time for doing all that.
This is called a beer mile.
They occur in various cities in N. America.
We had one here a few weeks ago.
You don't drive yourself home.
Cheers, Clive