I know this is a super old thread that i'm reviving but here goes
I'm a native speaker of English, fluent in French, uhh bad in Polish, intermediate in Latin and beginner in German and Russian.
Wasn't planning on learning French, but the lingusitics professor at my university thought i'd be really good in French so I gave it a try, loved it, interned in Paris (and now I want to go back so badly! I miss it every day)
I have a few embarrassing stories of when I started-
one time I accidentally told my host that "she" smelled instead of my cheese smelled. I apologized and we laughed. Don't ask how I got those mixed up since I seriously don't even remember what I was thinking
and this was more awkward, I was speaking in French and some guy was like "I don't speak English, I don't like foreigners" and I responded "I'm speaking in French, you can't recognize your own language?" That was weird, especially since most people responded to me in French when I spoke French, although I did have those people who wanted to practice English and that was annoying since I wanted to do French. Living in France for 3 months really helped to improve my accent. The vast majority of people in France were super awesome and helpful.
Polish I took as part of a foreign language challenge I got, and I kept it up because it was useful for my international relations classes. I did notice people tend to flirt with me more when I speak Polish and its weird
German and Russian I'm doing just here and there because I have some friends who are fluent. I did try to ask a Russian lady something, but apparently I pronounced the words exactly like Polish so she was like "huh??" since I learned Russian mainly from reading.
I took Latin in Middle School and still can read alot of it.
I took Spanish in High School but never really did anything with it.
So in Switzerland, I had a guy my age approach me and say something in German. I responded in French that I can't speak German. He continued (in French) "oh good one, aren't you coming to the study group tomorrow?" and I'm like "I'm from the US, I'm not from here" and he was really convinced I was a local girl
Thank you for the Polish Grammar in a nutshell!! <3 I needed that! I've got the pronounciation down, but the grammar is annoying.