To veer off course violently. The phrase comes from Mitchell Johnson, Aussie Test bowler who regularly gets panged around the park by opposition batsmen due to him bowling the ball down the left, down the right, anything but straight.
I was driving down the motorway and the back right tyre went causing the car to Mitchell across 3 lanes and end up on the grass verge.
Mitchell is a guy who just loves playing video games(at his moms house mostly) he also is straight but can tend to be fruity to others (especially black guys named Marion.
Mitchell is a good guy, kind and generous. Often wears shorts, even in winter. Mitchell is also a unit when measuring the combined pressure and gas volume of a fart.