To celebrate my Thai niece's birthday, 3 farangs & Thai wife went to an eatery. She was our designated driver and managed to make a glass of wine last till the bill came. Swigging it down she rapidly spat it back into the glass along with a large dead lizard. We called the proprietor over having been there many times. He magnanimously decreed the 90 baht wine would be deducted from the 6K bill. It was our last visit; I reckon this generosity has cost him over a hundred thousand in lost custom since.