Once I got up at a quarter to seven and I had 15 minutes left to prepare for morning exercises.

After I brushed my teeth, washed my face and packed my bag, there were three minutes left, barely enough for me to rush to the playground. The only thing I could do for my stomach was to drink a bottle of water.

While teacher was talk nineteen to the dozen in front of the classroom, I felt my bladder was full of water as if it would explode. I bore that feeling and waited for the class to come to an end.

As soon as the bell rang, I trotted to the toilet. I was in such a hurry that I took no notice of the sign hung on the wall beside the door. When I noticed there were no squat toilet, I raised my head hesitantly and was surprised to see a boy staring at me in astonishment. He hesitated for a while about whether to pull his pants down or to keep them on and finally shouted to me in anger and shame: "PLEASE GO OUT!".

After I slide out of the toilet with the speed of light, my mind was still black. At that moment did I first realize I have gone to the wrong toilet.