Getty Images

Former One Direction hottie Zayn Malik is king of Twitter feuds these days, huh? First with former bandmade / future father Louis Tomlinson, then Naughty Boy...the list goes on and on. Today we can add Calvin Harris to that list, which is really weird because he's a DJ and rarely gets involved in anything.

It all started when Z retweeted the blow tweet, a generic joke at the expense of Harris' girlfriend, Taylor Swift.

Of course, it totally escalated into a rather aggressive back-and-forth. Malik calls Harris a "dickhead," they both subtweet each other, Harris makes a joke at the expense of young people. Read the play-by-play below, then take our quiz: Which member of One Direction is this?