Do you know what Helen Kellers favourite tv show was? No neither did she
While i understand you are trying to be funny, this joke is a little insensitive.
Helen Kellers had no eyes and no tv show you dunce. Why are you even asking such a retarded question?
It is not very nice to make fun of people who are blind. While it is understandable that this joke is simply to make someone laugh, it is also important to get how this joke may sound to someone who may be blind.