おまいう

expression

look who's talking; you're one to talk

Internet slang abbreviation of お前が言うな. Used to retort when someone criticizes or gives advice they themselves should follow.

See also: お前が言うな

• A: 「もっと早はやく起おきなよ。」 B: 「おまいう。お前まえこそいつも遅ち刻こくしてるじゃん。」

  A: "You should wake up earlier." B: "Look who's talking. You're always late yourself."

• 「ちゃんと勉べん強きょうしろよ」って、おまいうって感かんじだよね。

  Him telling me to study properly is like, look who's talking.