I love giving nonsensical answers. To the people trying to sell me newspapers in the street I usually reply "I don't read". For the door-to-door charity folk I

I love giving nonsensical answers. To the people trying to sell me newspapers in the street I usually reply "I don't read". For the door-to-door charity folk I tend to use variations on "I don't like [whatever their charity is for]". E.g. I don't like children. This usually confuses them enough so you can get clear before they recompose themselves.