Well this has nothing to do with foreign language but it does have something to do with sign language. I had a sign language class in college and we learned to sign. Well as I was doing the sign for the letter "d", I accidentally raised my middle finger instead of my index finger.

Suffice to say, that was EXTREMELY embarrasing cause A)the teacher's mouth dropped thirty feet to the floor and B)the whole freaking class laughed their asses off @ me and my screw-up. So not so good memories right there.