Person -when using a computer- who expects a different outcome clicking several times on the same link. This person ignores the endlessly spinning hour glass icon telling you that the computer is processing your request, FROM THE FIRST CLICK!!! Soon 15 internet explorer browsers are open and the person questions the speed of his computer.
After over clicking 436 times on the play button, Johnnathan was certain his song would play. He is an over clicker.