The line borrows its power from the familiar cat-and-mouse relationship between a clever fugitive and a famous detective, with Holmes standing in for any brilliant pursuer. Online, creators use it less as a direct quote from one film or show and more as a reusable taunt for escape, trickery and narrow getaways. Its short length makes it easy to drop at the end of a clip, where it turns a simple exit into a confident challenge and invites viewers to imagine what happens next.