I did something similar to that once. You can have a wired mouse and a wireless plugged into the computer at the same time. I was asked to come view a website layout after lunch and arrived there before the other person. While waiting I decided to plug in my wireless mouse. When they arrived I put my hands behind my back with a clipboard in one and the wireless mouse in the other. As they would move the pointer over an Icon and just before they could double click it I would quickly move the wireless mouse on the clipboard behind my back and the pointer would jump away from the icon. I then wiggled the wireless mouse as they moved the pointer back so that the pointer wobbled as they moved it. They thought the wired mouse was Faulty till I handed over my wireless mouse and said try this.