THAT'LL BE THE DAY


Meaning of THAT'LL BE THE DAY in English

informal That will never happen. Joe wanted me to lend him money to take my girl to the movies. That'll be the day! "Wouldn't it be nice if we had to go to school only one day a week?" "That'll be the day!"

American idioms English vocabulary.      Английский словарь американских идиом.