the fear of long words, which, ironically, is so ridiculously long that even people without hippopotomonstrosesquipedaliophobia may get overwhelmed by it
Pam: so you have hippopotomonstrosesquipedaliophobia
Ellen: SHHH
Pam: *grins*
Ellen: don't you dare Pam: iiiiiiiiiit's SUPERCALIFRAGILI--
Ellen: *runs away, screaming*
Alice: So doc' is there anything wrong
Doc: I'm affraid you have hippopotomonstrosesquippedaliophobia
Alice: AAAAAAARGH MAKE IT STOPPLEASE NO AAAAAAAAARG
Doc: they should make an abreviation for this ...