Every time you open an Incognito tab in Chrome / google chrome :: browsers :: incognito :: NSA :: gif (gif animation, animated pictures)

Yeah... that's not what "incognito" tabs, or their other-browser equivalents do. They don't save cookies or history, so that someone else who shares use of YOUR computer, can't see what you were doing.

If you would like to go to your grave, keeping the kind of porn you like to stream a secret from whomever is going through your effects afterwards, those tabs might be helpful.