If not "Two Beers, Officer", then what?

[Warik]

Inspired by the numerous potential DUI related threads that have come about in the past weeks...

So we now know that "Two Beers" is a no-no because the cops assume that 1) no one would ever tell the truth about how much alcohol they had, and 2) no one would ever only have two beers and drive erratically enough for them to be pulled over.

So, we can either say "Two Beers" and then be forced to take a field sobriety test, which even a sober person is > 50% likely to fail, or we can say............. what?

Can you completely LIE and say "I haven't had a drop of alcohol?" Can you refuse to answer that question without getting yourself subjected to a test anyway?

Or how about the all-encompassing: "I am 100% confident that I have not consumed sufficient alcohol in the past 24 hours to impair my driving ability, sir."