on a fool's errand

*on a fool's errand

Fig. involved in a useless journey or task. (*Typically: be ~; go ~.) Bill went for an interview, but he was on a fool's errand. The job had already been filled. I was sent on a fool's errand to buy some flowers. I knew the shop would be closed by then.
See also: errand, on
References in classic literature ?
I do not know why I had an inkling that it would appeal to Strickland's sense of humour to bring a furious stockbroker over to Paris on a fool's errand to an ill-famed house in a mean street.
Peter Collins reviews Garcon Brasserie 7 Terry Walton is sent on a fool's errand on the allotments.
Given how poorly commercial leasing and sales have done in the city this year, some people might think they're on a fool's errand.
And the campaign for a new mayor 7/8 Tommy Carcetti (Aidan Gillen) feels he's on a fool's errand running as a white mayoral candidate in the predominantly black city -- gets increasingly ugly.
Howard Berman, D-Van Nuys, has set off on a fool's errand - repealing the 22nd Amendment, which limits presidents to just two terms in office.