Mars Rover inadvertently draws penis on the Red Planet - NASA photo

From early cave paintings tens of thousands of years ago to the bathroom stall at our favorite bar, humans have probably been scribbling male genitalia on flat surfaces ever since we, as a species, first learned how to draw. While science has allowed us to do many great things, perhaps our finest moment came recently when NASA inadvertently drew a penis – captured in the image above – on the surface of the Red Planet. Checkmate to all you graffiti artists out there.

While this might seem like a comical stunt dreamed up by the guys over at Top Gear or even the geeks from Big Bang Theory, this is actually the result of Mars Rovers Spirit and Opportunity leaving tire tracks on the surface of the Red Planet. Although the drawing is said to be accidental, we'd like to imagine that some of the smartest people on the planet operating the equipment still have an incredible sense of humor.