Butterfly clicking
Butterfly clicking drums two fingers alternately on the same button, roughly doubling a single finger's rate. On the right mouse it's the fastest widely-used legitimate technique.
One finger cycles up-down at ~7 CPS. Two fingers alternating on the same button interleave their strokes — index striking while middle lifts — and the rate compounds to 15–25 CPS. That's the whole trick: it's a drum roll on a mouse button.
How to butterfly click
Rest index and middle fingertips side by side on the left button. Alternate strikes in a rapid drum-roll rhythm — think tremolo on a piano key, not two separate click decisions. Keep strokes shallow; the button only needs a millimetre.
The technique depends on your mouse more than your fingers: switches with light actuation and fast reset register alternating strikes cleanly, while heavier or debounced switches swallow every second click. If your counter shows 8 CPS while your fingers are clearly doing 16, the mouse is eating them.
Where it's allowed — and where it isn't
Some competitive Minecraft servers ban butterfly clicking (or cap CPS) because certain mice register extra clicks per press, blurring the line between technique and hardware exploit. Casual servers and click tests generally allow it. Know the rules before you drum.
For raw ceilings beyond butterfly, drag clicking exploits shell friction for 25+ CPS bursts — with even bigger asterisks attached.
Testing it against a human
Numbers on a solo counter are practice; numbers against an opponent are results. Smash on blocks.pw gives you a 3-second head-to-head window — perfect for butterfly bursts. See what your rate means at is 20 CPS good?