@thealmostbear @cmconseils Yeah. About 12 years ago a snotty Paris taxi driver pretended not to understand me. I'm not fluent, but taxi conversations are well within my capability; I recited the address smoothly and with a pretty-damn-good Parisian accent. He left the car in Neutral with his foot on the brake at the curbside and stared straight out the windshield as though I weren't in the car.

Yup: his problem was I said "Nonant-et-un" ("Ninety-and-one"). Once I said "Quattre-vingt onze" ("Four-Twenty Eleven") instead, he suddenly understood just fine every word I said.