Hippopotomonstrosesquipedaliophobia, ironically, is the fear of long words. Perhaps even more ironic is the "short" version of that word: sesquipedalophobia.
Odontophobia is the fear of teeth!
Algophobia is the fear of pain.
Deipnophobia is the fear of dinner conversation!
Anablephobia is the fear of looking up? Really?
Xanthophobics fear the colour yellow!
I'm really not sure where I'm going with this, I just thought these were really funny!
For a complete list of fears to use on your friends and family, check out: http://www.phobialist.com/
...and to all my friggaphobic friends out there, I wish you a happy Friday!