Butterfly
This is the butterfly, it's the basis of a lot of moves so get to know and love it! this looks like the poi are going across the same plane as each other so should tangle up, to stop that happening you have one of the poi (usually the hand that's above the other) going at 90 degrees to the floor, shift the plane of your bottom hand so that the top of the circle is further away from you than the bottom of the circle. This should stop the poi from hitting each other. This really is a very easy move once you've clicked with it and shouldn't take too long to learn.
The trick is to just bounce your hands up and down like shaking hands with someone, if you have the momentum and the planes right then you'll be laughing.