Personally I've always wrote my code and comments in English, even if I never fully understood why. That said, having studied abroad and returning after graduating I did hit a few rocks: My tech lead at my first job upon returning(the same job when we had to migrate the Romanian database) was telling me how to do something and he said something along the lines of "You take those and shove them into an array" in Bulgarian(my native tongue). As you could imagine, "array" in Bulgarian sounds nothing like that. I nodded with approval(having no idea what he had just said), and google-translated the word he used 5 minutes later. When "array" came up on the screen I felt like someone had smacked me in the head with a sledgehammer.
