Characters
What the hell is a jigawatt!?
— Marty • Back to the Future

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker reacts with baffled exasperation to an unfamiliar word, demanding to know what a 'jigawatt' is. The question captures the shock of meeting a strange technical term in a tense moment, with confusion and disbelief coming through more strongly than any curiosity.
Context reviewed