FB users have been falling for the gag by sharing the post thousands of times over.
The post reads:
“In response to the new Facebook guidelines, I hereby declare that my copyright is attached to all of my personal details, illustrations, comics, paintings, professional photos and videos, etc. (as a result of the Berner Convention). For commercial use of the above my written consent is needed at all times!” h/t myfox8
So feel free to ignore the post, afterall, it is a prank.