The video uses a high-contrast visual illusion that creates an immediate, relatable 'shock' moment, encouraging viewers to watch the full loop to see the trick.
Summary
A man walks down a sidewalk and pretends to fall into a large 3D chalk drawing of a hole in the ground. He repeats the gag with a different chalk drawing of a pit with a bridge over it.
Structure
1Man approaches a 3D chalk drawing on the sidewalk
2Man pretends to trip and fall into the drawing
3Man reacts with feigned shock and laughter
4Man repeats the gag with a second, different chalk drawing