A dance, usually performed by young men, of which they sway their pointing index fingers from side to side whilst looking up to their top right.
Girl: "John said he was only skipping the gym tonight because he would make up for it on the dance floor... but he is just derek dancing!!!"

or

Emma: "The guy by the bar is good looking, I'm going to ask him out."
Alice: "Hold that thought. He just started derek dancing."
by naughtysugar April 10, 2013
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