Banger

Fold the paper in half along the length, then fold it in half again widthwise to find the center.

A "paper banger," also known as a paper popper or flapper, is a simple origami toy that makes a loud snapping sound when flicked quickly through the air. The sound is caused by air rushing into a folded pocket, forcing it to pop open rapidly. How to Make a Simple Paper Banger banger

Bring the side corners toward the center crease to form a square or triangle shape with interior flaps. Fold the paper in half along the length,