One of the jokes is the Shocking Pen. Leave this pen lying around your desk at school, in your home office, or in your cubicle for ongoing amusing reactions. -- When unaware coworkers and friends touch the pen's top button, this inconspicuous ballpoint pen discharges an electrical shock. The product emits electrical shocks that could damage pacemakers and other electronic equipment, so be careful. -- If you have epilepsy, a heart problem, or another associated sickness, do not use this product. Group of Ages: Over 10 years