できない相そう談だん

expression, noun

impossible request; unreasonable proposal; tall order

Used when someone asks for something that is clearly impossible or unreasonable. Often appears in the phrase できない相談だ to reject such a request.

• 明日あしたまでにこの仕し事ごとを全ぜん部ぶ終おわらせるなんて、できない相そう談だんだよ。

  Finishing all this work by tomorrow is an impossible request.

• 給きゅう料りょうを倍ばいにしてほしいって？それはできない相そう談だんだね。

  You want me to double your salary? That's an unreasonable proposal.