In playing Capture the Flag or some variant thereof, Electricity is the process by which teammates who have been tagged and thusly jailed create a human chain by holding hands and or touching foot to foot. If tagged by a free teammate, the freedom flows (like an electric current, I suppose) throughout the chain and all members of the chain are liberated.

By creating a long chain, the inmates can extend themselves closer towards their playing field, thus making it much easier for a free teammate to run over and release them from jail. Should someone on the chain be tagged by a free teammate, then everyone currently on the chain is freed from the jail and are given a free walk back to their side.