He set fire to his navel.

A man in a blue shirt sits in a chair outdoors at night, holding a long stick with a smoldering object on top, which he raises. As he lifts the stick, the object ignites into a large fireball and a cloud of smoke, causing the people around him to react and flee. The scene takes place in a backyard or patio area with white plastic tables and chairs, with a grill visible in the final frame.