talk the talk

"Talk the talk" is an idiomatic phrase that means to speak convincingly or confidently about a particular topic or subject. It implies that a person claims to have knowledge or expertise about something and can discuss it, but it does not necessarily mean that the person can actually do or accomplish what they are talking about. It is often used to highlight someone's ability to use impressive or persuasive language without necessarily having the practical skills or actions to back it up.