YOU'RE DOING IT WRONG

But she's doing it wrong very well. Because the ring finger shares the same flexor muscle as the middle and pinky fingers, most people can't extend it alone like she is doing.

i just did it...so its not as hard as it looks ^_^

now i cant stop
its kind of fun

It does hurt a bit though. But easy.

I did not know this until I tried it. I can extend it only as far as she is (straight out), but I'm also double jointed in every finger, so I'm already somewhat weird there.