Cut-out Animation

How cut-out animation work?

Cut-out animation is the same technique for doing stop-motion animation, cut-out animation is using cutout shapes, characters, props and backgrounds from colour paper, white paper with drawing on it or materials that are arranged on a flat surface and manually moved and repositioned to produce the animation.   

South Park created by Trey Parker and Matt Stone
For the cut-out animation in South Park they used construction paper (sugar paper) witch is more tougher then normal paper. They used traditional stop motion cutout animation techniques in the original animated shorts and in the pilot episodes but in the later episodes they've been produced by computer animation.