古人如厕有很多奇怪的禁忌。如不宜露头上厕,即上厕所一定要戴帽子。东汉桓谭《新论》书中有“杜兰香戒张硕不宜露头上厕,夜行必烛,若脱误,当跪拜谢”的例子。《初学记》所辑《孝子传》中也有类似的例子。东汉名士管宁有次坐船遭遇台风,便跪倒在地向老天忏悔,思前想后,觉得一生罪过只有某次如厕时没有戴帽子,于是向上天痛哭悔过,不久海风停,他便躲过 The ancients have a lot of weird taboos on the toilet. If not outcrop, that is, the toilet must wear a hat. The Eastern Han Dynasty Huan Tan “New Theory” in the book, “Du Lan Xiang Jie Zhang Shuo not outcrop, night will candle, if mistakes, when kneeling thanks” example. “Beginners mind” edited by “filial son” also has a similar example. In the Eastern Han Dynasty, there was a time when there was a typhoon on board the ship. When she fell down on her knees and repented to God, she thought she had only one time spent smelt on her toilet. She did not wear a hat while going to the toilet.