Some wierdo's who paint their faces black and dance round sticks in the country (in England).
Usually from the South West, anal and gay - probably has sex with members of their own family
in any shooting game, when a player tries to move around quickly, or jump around in order to avoid getting shot at by an enemy in close proximity, they are being a noob dancer (it is commonly used when the player is reloading, is using a grenade etc., in which they arent able to fire back at the enemy)
P1 approaches P2 from behind. P2 turns around and notices P1, so P2 starts to move around, crouch, jump, etc. Instead of shooting at him. P2 is considered a noob dancer for "dancing" instead of firing back