第四教 · Dai Yonkyo
Soto Makikomi 外巻込
Outer Wraparound
Mechanic
Tori traps uke's arm tight against their own body, turns in from the outside, and throws themself into a falling spin; uke, tethered by the trapped arm, is whipped around tori's rotating body and driven into the mat.
Analogy
The tetherball rope has wound almost all the way in, the ball whipping in tighter, faster circles. And then the whole pole tips over. The ball, wrapped fast to the pole, gets slung around and down with it, thumping into the dirt still tied on.
Why it maps
Uke's trapped arm is the rope, tori's spinning, falling body is the winding pole: wrapped tight to a rotating axle that itself goes to the ground, you go with it.