The play received 'mixed' reviews. = The play's reviews were 'mixed'. [=some critics liked the play, while other critics did not]
I accidentally 'mixed up' the two files. [=I put each of the files in the place where the other one should have gone]
He 'got mixed up in' a plan to destroy the government. [=he became involved in a plan to destroy the government]
(..) Does he have, like, super-gross hands... ...that look like they're made out of big pink sausages? Like eagle talons mixed with squid? That's what I was just thinking about. I had this weird dream when I touched the Piece. Well, I mean, I wasn't asleep, (..)2014 The Lego Movie