You don't know Jack

Get ready, indie kids are going to jacking soon. I can feel it. And it is going to be called something "nu". It is already infiltrating the dancefloors.

"grinding their pelvises together" HAHAHAHAHA

From Wikipedia:

Jacking is a dance technique that was popular in the late 1980s^{[citation needed]}. "Jacking" came from the early Chicago house music scene. The dance itself was sexually charged, with couples (often two men or two women) grinding their pelvises together. The style gave birth to the dance styles popular during the early UK acid house scene.

When referring to house dancing this word has taken on a slightly more specific and less sexual meaning. Jacking is the technique that comes from moving the torso forward and backward in a rippling motion, as if a wave were passing through it. When this movement is repeated and sped up to match the beat of a song it is called jacking, or "the jack." This technique is the most important movement in house dancing because it is the foundation that initiates more complex movements and footwork.

Because of jacking's association with early house music, many early house tracks used the word in their titles. Examples include Raze's "Jack the Groove" and Steve "Silk" Hurley's "Jack Your Body".