Shocking gum
Shocking gum is a practical joke device that delivers a mild electric shock. The victim is offered a stick of gum from a box, and touching this triggers the shock. A few novelty companies in the 1950s produced these 'Shocking gum' packages. The most popular brands of Shocking Gum are Fruit Juicy and JB.
In 2005, the US Military reported that insurgents in Iraq were using shock chewing gum as a form of torture, forcing prisoners to bite down on the sticks.