So I looked up "butterfly clicking" thinking it was this, but that only uses one hand, the way I tend to speed click involves both hands, and seems to be a bit faster than butterfly clicking (for me).

You take one hand, and hold the mouse with your finger held firm, just on the button without clicking, and then you drum on that finger as fast as you can with your other hand, with as many fingers as you can. The finger on the button channels all the clicks.

Doing this "channeled" style I can get about 9-11 CPS, and with butterfly I only get about 6-9, (jitterclicking I get about 11-13, but that hurts.)

Does anyone already do this?

(before anyone suggests wheel clicking and etc, 1 my mouse doesn't support rebinding scroll, 2 I'm mostly curious about defaulting binding methods.)

I haven’t tried it myself, but I’m sure there’s someone out there. I’m pretty sure this would count as left clicks instead of fast clicks too, so if so it could be a new consistent method of left clicking. The only problem I see with that is it would be harder to flick and get upgrades, buildings, etc with two hands on the mouse.