You don't want to mess with jellyfish. Not that they're easy to annoy -- they don't even have brains -- but if you get in the way of one of their tentacles, you can expect a nasty, poisonous sting. That's true in media too, but with one little difference. When a fictional character has a run-in with a jelly it often sets their hair standing on end, with sparks flying or some other electric effect surrounding the victim -- as if they'd just gotten a dose of Harmless Electrocution. Compare to the Coconut Effect. Examples of Electric Jellyfish include: