以 My unforgettable trip 為題寫壹篇英語作文 100到200詞 要自己寫的 不能復制，外加壹個英語笑話

My unforgetable trip is to a public toilet in a hill top park. The toilet is at the top of the park. The water supply to the toilet is from the hill top spring. The toilrt cubicles for shitting is quite open whereby the walls are onlt one metre high. When you squat to shit, the walls can hide your naked backside and your penis. The shit you excrete is also not so visible by the man next door. After shitting, you need not flush the shit. All the flushing is automatic by a water flushing system. The principle of the flushing system is using a lever to manupulate the centre of gravity of a bucket of water. I think the designer must have done it because many users are lazy to flush toilet