you’ll be sorry
From Longman Dictionary of Contemporary Englishyou’ll be sorryyou’ll be sorryspokenREGRET/FEEL SORRY used to tell someone that they will soon wish they had not done something, especially because someone will be angry or punish them You’ll be sorry when your dad hears about this. → sorryExamples from the Corpusyou’ll be sorry• You'll be sorry when your dad hears about this.