You step out of his way. "Did you not hear me?" came that
awful voice again. "Hand over the house!"
The fireflies fill up a jar. All of a sudden one firefly gets bigger
than the other fireflies. It seems to boss the other lightning bugs
around. It expands so much that the jar bursts open. Then it comes
closer to you. "Give me your house or else I'll burn it
down," he says menacingly. Every second he grows bigger and
bigger. It seems that he will explode.