( BrE , informal ) to hurt yourself physically :
Watch how you use those scissors—you could do yourself a mischief!
( BrE , informal ) to hurt yourself physically :
Watch how you use those scissors—you could do yourself a mischief!
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005