Embarrassment

Three years ago I was taking the train between England and France. I decided to go the toilet. I did not know how to knock the door because it was the kind of electronick doors. So usually there is a sign which supposed to mean "close", but I did not know about it. I was really sick, so I was doing something "which smell A LOT", and then, a guy came over and open the door. I took quickly my coat to hid me and I run, and I SWARE I found quickly the sign meaning "close the door". When I went out from the toilet, many guys were looking at me, trying not to laugh. But I WAS!!!