that'll be the frosty Friday

フレーズ

Synonym of that'll be the day (“said in reply to something that one believes will never happen”)

日本語の意味

（ありえない出来事に対して）「そんな日は絶対に来ないだろう」という懐疑や皮肉を込めた表現

When he vowed he'd start arriving on time, she laughed, that'll be the frosty Friday.

彼が時間どおりに来始めると誓ったとき、彼女は笑ってそんなことは絶対に起こらないと言った。

意味（1）

Synonym of that'll be the day (“said in reply to something that one believes will never happen”)