Check out a video and description of the Gemini Loops yoyo trick.
Gemini Loops combine Inside and Outside Loops into the same trick. (In case you aren’t familiar, Inside Loops are loops that go on the inside of your wrist. Outside Loops go outside your wrist.)
With this trick you simply alternate between one Inside Loop and one Outside Loop. See how many you can do.
See the video
Demonstrated by Lars