I’ve seen this noodle trick done in person, in a little eight-seater Halal-Mongolian restaurant outside Dongguan. The noodlemaker twirled it over head, slapped the noodles down onto a metal table after each stretching. When they were thin enough, he balled them up and made a perfect free throw out the window into a pot of boiling water outside. Served with yak meat and green onions. Mmmm.