have legs(redirected from has legs)
(of a concept, phenomenon, something discussed, etc.) To have the ability to endure, stay relevant, or continue to maintain interest. That theory really has legs—years later, most people still think that the wrong man was convicted.
If an idea, plan, or story has legs, it is likely to be successful or to continue. Blucher was confident that his concept had legs, so he pressed Cooper for a meeting. In this instance the story might not have legs.