noun
playing dead; planking
A children's game or internet meme where participants lie still as if dead; 'planking' refers to the stiff, face-down pose popularized online.
子供たちが公園で死体ごっこをして遊んでいた。
The children were playing dead in the park.
あの写真は死体ごっこの一種で、プランキングと呼ばれている。
That photo is a type of playing dead, called planking.