大だい事じなところ

expression, noun

private parts; important parts

Euphemistic expression literally meaning 'important place'; used to refer to genitals or private areas in a polite or indirect way.

• 小ちいさい子こに「大だい事じなところは隠かくしてね」と教おしえる。

  Teach small children, 'Cover your private parts.'

• 水みず着ぎに着き替がえるときは、大だい事じなところをタオルで隠かくす。

  When changing into a swimsuit, cover your private parts with a towel.