Why Thank You, Irony

I'm pretty sure someone had fun coming up with these words:

sesquipedalianism \ses-kwi-PEED-l-iz-uhm\, adjective:

1. Given to using long words.
2. (Of a word) containing many syllables.

hippopotomonstrosesquipedaliophobia, noun:

Fear of long words.

Now that's just mean.