寝ね言ごとは寝ねてから言いえ

expression

don't talk nonsense; stop dreaming

A humorous retort telling someone they are talking nonsense or being unrealistic, literally 'say your sleep talk after you go to sleep'. Used in casual conversation.

• 「宝たからくじが当あたったら会かい社しゃを辞やめるよ」「寝ね言ごとは寝ねてから言いえ」

  "If I win the lottery, I'll quit my job." "Don't talk nonsense."