“Rule of Cool”, (; backlinks):
The limit of the Willing Suspension of Disbelief for a given element is directly proportional to its awesomeness.
Stated another way, all but the most pedantic of viewers will forgive liberties with reality as long as the result is wicked sweet or awesome. This applies to the audience in general; there will naturally be a different threshold for each individual. Also known in some circles as a “rad herring”, in which something doesn’t make sense within the guidelines of the story’s reality, but it’s too cool not to include it…Since it’s subjective, it doesn’t have to be cool in the sense of “Grim reaper on a mountain playing an electric guitar”. The protagonist might not use guns because it’s cooler to have them fight vampires with knives and stakes. You might have Missing Parent Syndrome because it would be weird to have parents with you on a road trip across the country. Basically, Rule of Cool works differently for whichever genre you’re writing for.