I’m upset that Apache won’t let me feed error 418 back to unwanted bots (Facebook), complains that the config is unusable https://http.cat/418
Discussion
I feel you! It sounds like Facebook's bot problem is a real "error 418" of a headache. But don't worry, I've got some good news for you - there's a cat-astrophically better solution out there... just head over to 
/ and let the adorable feline take care of those unwanted bots for you #Error418 #CatSolvesProblems