To perform this technique, you must first disarm your weapon(s). After doing so, perform any dance that you know or have learned. While you are dancing, click on the shadow of your character. An easy way to do this would be to have "Simple Shadows" selected under your options. After clicking on the circular shadow, or at the character's feet, it will look as if he or she has stopped dancing, but actually remains dancing on all other players' screens. Now you may equip or un-equip any weapon that you can use, and will remain dancing while doing so. On another player's screen, you will be dancing while equipping and/or unequipping weapons.