Sitting in the motorhome a couple of weeks ago, seeking shelter from the intense heat in Croatia and having drunk my third half liter bottle of Lasko, I thought I would see if I was pissed. So I opened one of my French breathalyzer's and it stated put in mouth and blow until the white dot changes colour. Well, when you put it in your mouth you cant see the white dot even if severely cock-eyed because it's about an inch in front of your nose. Absolutely useless. Anyway, I failed.