I was in northern France. I found the locals didn't speak much English, and didn't expect travellers to speak much French.
I got pretty bad food poisoning (turns out that a cafe shouldn't store uncooked croque monsieurs piled up on a tray at room temperature. Who knew?). Anyway, I was pretty sick for a day, and seeking some pharmaceutical alleviation. This was before data roaming and Google translate. So as my partner drove to the nearest pharmacy, occasionally stopping for me to throw up , I practiced my sentence in my head. I think this is what I said. I haven't checked the spelling.
Bonjour. Je mange quelquefois, et maintenant, je suis malade.
That worked. She was all over it. She asked me followup questions that may have well been in Russian. Two years of HS French in Australia doesn't include the words for "vomit" or "diarrhoea". I looked at her blankly, and what followed was the most disgusting charades I have ever participated in. But suitable drugs were acquired and my symptoms were relieved.