HISTORICAL TRIVIA: In the US, whiskey used to be "proofed" with gunpowder. You wet the gunpowder with the whiskey and lit it. If it was 180 proof or so it would burn and ignite the gunpowder, which would FOOF!. If it laid there in a soggy black mess the guy you were trying to sell it to would toss you out, without beating you up if you were lucky.

How about changing it to "Never drink so much that you shoot at tax collectors -- and miss."