Here's another....

I was at a bar in Japan talking to a Brazilian guy who didn't speak English. I don't speak Portugese, but both of us could speak a little Japanese and and little Spanish. I wanted to say "Where is...." ("donde esta" in Spanish, "doko desu ka" in Japanese) and mixed the two languages together and said, "Doko esta". After hearing that, he nearly fell out of his chair laughing. It was quite a multicultural evening.