For this trick, it's called Man on the Flying Trapeze. You start off this trick with a breakaway throw, like so. And with the yo-yo swinging, you want have the yo-yo hop over your left index finger. When it goes over your left index finger, you will want it to land in the string, like that.
With this trick, there's different variations you can do. You can do it from Around the World, under the leg, behind the back, but also you can hop it.
With the Trapeze, you could also do different variations like doubling it up, triple, quadruple. You've got to try different maneuvers to see what you can come up with. Reverse, on the top, on the bottom. Bring it around. That's the Man on the Flying Trapeze.