百日の説法屁一つ
ひゃくにちのせっぽうへひとつ
Meanings
- Expression single mistake which ruins all one's hard work; one blunder rendering a long period of effort useless (literally: one fart in a hundred days of sermons)
Kanji
- 百 hundred. Read as ヒャク.
- 日 day. Read as ニチ.
- 説 explain. Read as セツ.
- 法 law. Read as ホウ.
- 屁 fart; passing gas
- 一 one. Read as ひとつ.