do someone a mischief
do (one) a mischief
To do something that harms one. Primarily heard in UK, Australia. You sure did your brother a mischief by including him in that dangerous game.
See also: mischief
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
do someone (or yourself) a mischiefinjure someone or yourself. informal
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