Mark Cuban Challenges Donald Trump to 'Harlem Shake Duel'

And now, we present to you the latest in billionaire Twitter wars

Mark Cuban and Donald Trump have been going back and forth for a little while now. Points of contention have included their respective reality TV shows, the performance of Cuban's Dallas Mavericks and other very important things

For the full tête-à-tête, please feel free to go through their individual feeds, or consult Google. But here's the important news: It. Just. Got. Real

How? Cuban escalated the smack talk by challenging Trump to a "Harlem Shake duel." We're not quite sure how that would work, but it does call to mind certain imagery. Here's Cuban laying down the gauntlet late Monday night: