Kani basami is judo's flying scissors throw, and was banned from competition because of the risk of breaking one or both of uke's legs.
It's a fun throw, and requires a strong breakfall from uke. In learning this throw it is helpful to put one hand on the floor, but it's much more satisfying to do it in mid-air.
In wrestling you'll sometimes see the even more spectacular and dangerous flying head scissors variation, performed here (at 1:20) by Scarlett Johansson's character in Iron Man 2.
That's not allowed in competition, either!
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