MIX IT (WITH SB)
Meaning of MIX IT (WITH SB) in English
( BrE ) ( NAmE ˌmix it ˈup (with sb) )
( informal ) to argue with sb or cause trouble
Oxford Advanced Learner's English Dictionary.
Оксфордский английский словарь для изучающик язык на продвинутом уровне.
2005