If you prick us, do we not bleed? If you tickle us, do we not laugh? If you poison us, do we not die? No, we don't die. Because we're robots. And that blood is really just sugar and die. And we hate laughing, but we do it to keep up appearances. roger Roger Federer of Switzerland changes shirts during a change over against Andy Roddick. Technical Details Taken: April 3, 2008