And I would've done the same.
NASA, best known for crumpling up my astronaut application and crushing a young man's dreams, apparently took the time out of the Spirit and Opportunity rovers' busy schedules of searching for alien life and taking pictures of dust to draw this giant penis on Mars. Time well spent if you ask me.
Thanks to Dunc and fat piggie, who're convinced some fun-loving aliens are going to see that and decide to not nuke earth after all. 'The Pecker That Saved The Planet' we'll call it
in history books on Wikipedia.
Full disclosure: NASA claims the penis shape is entirely accidental. CONSPIRACY!