"Hey, men - do me and yourselves a favour, and don't underestimate my skill," she wrote, before sending out another tweet that said, "Yes, i'm a young lass, but i'm also making the best decisions for me each day. #stayeducated "

So what sparked these fightin' words from Lorde? Perhaps it had something to do with her firing her longtime manager, Scott Maclachlan. No reason was given for the split, but maybe this gives a few clues?