Ultraviolet Cheater Pen

Why study when you can cheat? Each 5 inch (12.7 cm) plastic Cheater Pen features ink that is made of special high brightness compounds that are invisible to the naked eye, but magically illuminate when exposed to ultraviolet light. A black light is conveniently located on the opposite end of the pen, allowing you to see anything that might happen to be written on your arm. Battery included.