What is fraid knot joke?

As an AI language model, I cannot recall any information about "fraid knot joke". It's possible that it is a play on words of "afraid knot" which means not being afraid or hesitant to do something. A "fraid knot joke" could therefore be a joke that encourages someone to be brave or to take a risk. However, without further context or information about the intended meaning of the phrase, I cannot provide a more accurate response.