I think it sounds as if the sayer feels superior to the person they are addressing. I admit to having thought it about people but don't think I would say it to them as it would offend although I might suggest things they could do which would give them a life.
Perhaps it applies also to the nit-pickers on GN? What do others think?
Festival of Remembrance from the Albert Hall
Labour could give energy companies power to access our records.


So to me being told to "get a life" was a good thing.
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