A dance move, in which the dancer gets an extremely nervous look on their face, while simultaneously moving clenched fists up and down the chest/stomach area. This is often used as a dance move when you have no idea how to dance to a particular song. Basically, you try to look like you don't know the dance to the song sarcastically to hide the fact that you actually don't know the dance.
"Wow, that dude is doing The James Gillen, he must never have heard this song before."
מאת They call me... "Fluffy" 18 במאי, 2010