The unseen snake

Another tiring day at the Kanha National Park and wanted to go the bathroom. I went inside thinking it was nice to see the tigers but was upset not to spot a snake. I was about to latch the door when I saw something slimy and black. I stepped back, it was a real snake. Neither I could open the door as it may fall nor could I close it. I had a good look at it, satisfied and terrified at the same time. I pulled the door in one clean motion and ran off shouting snake snake.