seven o'clock at night
`` Is dinner to be kept waiting for that youth all night ? Quarter past seven ! You know it 's just what I ca n't stand -- having my meals interfered with . Is my digestion to be ruined simply because this young nincompoop chooses to pay his social calls at seven o'clock at night ? '' `` Then we must ask him to dinner , '' said Mrs. Brown , desperately . `` We really must . '' `` We must _ not _ , '' said Mr. Brown .