The third alcoholic drink

Ever since the Australian
  drink driving campaign
   Entitled "Rethink your third drink"
 Hit the airwaves in 1992-

 I have very rarely had-
    a third acoholic drink
   In a row.

Co-incidence?

I don't think so!

Such is the power
  Of the catchy slogan
That hits on a key truth-

After a couple of drinks
  It's all down hill...

At least as far
  as your consciousness-
 goes!

Having said that-
  The occasional digression
May prove fruitful
 At times!