Sometimes it's fun to cause just a little mischief. Somewhere out there, someone or some people, came up with a concept called International Courage. It is a series of stamps that can be used to bring a little smile to the emotionless immigration officer at airports or it could end up dragging you into the offices of airport security for some nasty interrogations.
Instructions on how to partake in this mischief is suppose to be found on International Courage's twitter page, however, it is nowhere to be seen. Wonder if it was already shut down by some form of authority out there? Hmmm...