expression
you must be kidding; hey, come on!; surely not!
An exclamation used to express strong disbelief, objection, or disappointment, often in response to an unreasonable statement or situation. Casual and conversational.
「明日までに100ページのレポートを書いて」って、それはないよ。
"Write a 100-page report by tomorrow" — you must be kidding!
え、また値上げ？それはないでしょ。
What, another price hike? Come on, surely not!