Text (UG+errata): Target player keeps both hands in contact with each other. If he or she does not, sacrifice ~this~ and that player sacrifices three cards in play. [Oracle 2009/07/08]
The player must keep their real hands (not wrists) touching at all times. Don't wear gloves. [Barclay 1998/08/13]
If the targeted player has less than two hands, "both hands" means their hand of cards, and the one hand that they do have. This calls for exceptional manual dexterity. [Barclay 1998/08/13]
If the player has more than two hands, call the Men In Black. [Barclay 1998/08/13]
All tournament formats have banned cards from Unglued.
