noun
paper popgun; origami popgun
A folded paper toy that makes a popping sound when swung quickly. A classic children's craft in Japan.
子供の頃、紙鉄砲を作って遊んだ。
When I was a child, I made paper popguns and played with them.
紙鉄砲を勢いよく振ると、パン
When you swing a paper popgun sharply, it makes a popping sound.