Jitter Click is a fast clicking technique used by many pro-gamers. When you are jitter clicking, it's not just one finger (though you are not allowed to use two or more fingers), but your arm and wrist are also working together. Try to shake/tremble your arm and wrist as fast as possible and hit a higher CPS at your best.
Please feel free to share this test with your friends, and challenge them!
Note: You may try this Jitter CPS test as many times as you like. The highest CPS result represents your actual CPS. There is a “Try again” button for you after each attempt.