This is the word that happened to be when someone smashed their head on a keyboard and it became a phobia. The irony is that the phobia is the fear of long words.
Doctor: So, it turns out you have Hippopotomonstrosesquippedaliophobia.
Patient: AHHHHH! WHY WOULD YOU SAY THAT?
guy 1: "I have the fear of long words."
guy 2: "You mean Hippopotomonstrosesquippedaliophobia?"
guy 1: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
Hippopotomonstrosesquippedaliophobia is a fear of long words. Thats it. If you have Hippopotomonstrosesquippedaliophobia then you will be scared right now. Also this is one of the longest words in the dictionary.
Person 1:I have Hippopotomonstrosesquippedaliophobia.
Person 2: Then you should be scared.
Person 1:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA