I can rotate one finger at one direction and the other on the opposite direction while pointing one to another, simultaneously. I don’t know how uncommon it is but, back at high school, no one else in my class could do it. Totally unuseful skill.
My fingers don’t rotate unless you count wrist involvement, so I’m a little confused by what you’re describing.
If I’m understanding your description correctly (the image didn’t come through), I can do this too! I heard once as a kid it was impossible and I refused to accept that, so I practiced until I could do it.
Rephrasing to see if we’re talking about the same thing: I can point my fingers towards each other in front of me, then circle one hand away from myself and the other towards myself, and continue looping them in opposite directions. Most people can do it for 1-2 loops, but then end up moving both fingers in the same direction.
