Cruel definitions of phobias

So... I just found out that the word that means 'phobia of palindromes' is in itself a palindrome... Aibohphobia...

And do anyone know what the phobia for long words is called? It's 'hippopotomonstrosesquippedaliophobia'.

This cracks me up, but I wonder about the reasoning behind those names, I mean, aside from the obvious cruel joke on those who have these conditions...