Much in the same vein as Steve Wright's classic..
"What’s is another word for a thesaurus?"
... here are some similar titbits which I've either pinched, invented, or assimilated.

Why is ‘phonetically’ not spelt the way its pronounced?
Is it possible to be totally partial?
Can you give me a description for the word 'dictionary'?
Is there another word for synonym?
Why is dyslexia so hard to spell?
Why is abbreviation such a long word?
How is it that all the most salient abstract nouns are such short words? Love, life, hate etc.
What is acronym short for?
Is using big words like, say pretentious being exactly that?
If the only people who use the word sesquipedalian are, by definition sesquipedalian, what is the point in having the word? (Same goes for lexiphane)
How come the word intonation is hard to intonate?
How does a person with a stutter say 'stutter', never mind 'stammer' or 'spasmodic repetition'?
How come the word lisp is nigh on impossible for someone with one to pronounce?

I know there are many similar... so let's 'ave 'em ...
Fire at will [glee]