Mr Sarcasm/Mr Messy/Mr Forgetful etc
From Longman Dictionary of Contemporary EnglishMr Sarcasm/Mr Messy/Mr Forgetful etcMr Sarcasm/Mr Messy/Mr Forgetful etcspokenCHARACTER/PERSONALITY used humorously to say that someone has a particular quality or behaves in a particular way I don’t think we need any comments from Mr Sarcasm here. → Mr