Jerkin'?

If you overhear a group of kids saying 'We've been Jerkin' all day', don't be alarmed.

It's not what you think.

As Wikipedia puts it:

Jerkin' or Jerk is a dance movement. The dance itself consists of moving your legs in and out called the "jerk", and doing other moves such as the "reject", "dip", and "pindrop".

People who dance the jerk usually wear skinny jeans, considered a rejection of the baggy pants style. Many elements of scene and the raver are used in the jerkin' movement, such as bright colored clothing, tight pants, or novelty graphic tees. Also people who dance the jerk wear hightop or retro shoes, including Chuck Taylor and Nike hightop shoes. Shoes may or may not be multi-colored.

Below is a video of a local (Sydney) group called JerkSYD.