Sacre bleu!
Telling someone I was fluent in #french taught me never to #lie on your #resume.
I worked at an indie record store in the early 90s. We were that cool indie store like in #highfidelity (complete with music snobbery and attitude). And like most indies we sold "smoking accessories".
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On Saturday nights, the #haitian field workers would be bussed into town to buy stuff and blow off some steam. A bunch of them came into the shop. My boss turns to me and says "ask Tree, he knows French."
Like every #ontario high school student, I had to take french up to grade 10. Unlike every #ontario high school student, I thought that practically made me fluently bilingual. So I said as much on my resume and then promptly forgot all about it.
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So flash forward. These dudes know ZERO anglais. But the word "fumer" isn't hard to sus, neither was one of them flicking a zippo lighter and pointing at it, turning it upside down like it was empty. "Oh, you need lighter fluid. yea we got that." We figured it out (I even counted their change out in french), but it was _painfully_ obvious that I was nowhere close to fluent.
3/

La langue française est une forme obsolète d'impérialisme culturel. Oubliez leur discours désastreux. 
@fesshole Je ne parl pas français, trés desolé

I had the opposite experience. I knew my boss socially, and he knew I could speak passable French, so he called me into a meeting, without notice, as an interpreter in a highly technical discussion for which I knew none of the specialist vocabulary. Fortunately, in computing, as I rapidly discovered, French mostly uses mildly Frenchified versions of English terms, so a Raid controller is "un controller Raid", where "Raid" is pronounced like the French word "raide". Somehow, I muddled through and we had a productive discussion. It was hard work, though!
@fesshole when learning a language:
There is no such thing as one sentence. All conversion is made up of multiple interconnected sentences. You get to choose the sentences you want to use because you own your half of the conversation. The more you talk using more sentences the more grammar and vocabulary you use. It does not matter how bad your grammar and vocabulary is, what matters is how much you show you want to speak with other people.