With no single confirmed film, song or show attached to the name, insomnia has become a general label online for short clips that sum up sleeplessness. Creators reuse the idea across memes, gaming edits and late night vlogs because almost everyone recognises the cycle of lying awake, checking a phone and dreading the morning alarm. Its appeal is less about a particular source and more about the shared experience it captures as shorthand, so it keeps resurfacing whenever tired, wired or up too late is the joke.