Cheeky

The Curiosity Rover's been on Mars for a while now, digging in the dusty red soil and drilling into rocks, helping (at a very long distance - I'd hate to see the roaming charges) unravel at least a few of the secrets of the Red Planet.

So you'd figure the robot might want to blow off a bit of steam, in a quintessentially American fashion:

Could've been worse; it could have been carving gang tags in the dirt, or "Kilroy was here!"

Now, of course this is inadvertent; the rover was being driven around and executed a series of turns.

But with all the dreck going on right now, it's good for a laugh.