Tens of thousands of Facebook Oculus virtual reality (VR) controllers contain bizarre 'hidden' inscriptions warning that "Big Brother is Watching" and "The Masons Were Here" among other things ominous messages, according to Business Insider. 

According to Nate Mitchell, cofounder of Facebook-owned VR organization Oculus, the messages were "easter eggs" which were only meant for prototypes. 

Mitchell added "While I appreciate easter eggs, these were inappropriate and should have been removed." 

And while the affected units haven't shipped yet, Facebook spokeswoman Joanna Peace told Business Insider that they will ultimately go out to consumers with the hidden messages inside.