Life's Unanswerable Questions

Before they invented drawing boards, what did they go back to?
Can atheists get insurance for acts of God?
If you shoot a mime, do you need a silencer?
How can you tell when you’re out of invisible ink?
Does the little mermaid wear an “algebra”?
How does the guy who drives the snowplow get to work in the mornings?
Is it ever possible to have a “civil” war?
If a turtle doesn't have a shell, is he homeless or naked?
If a chronic liar tells you he is a chronic liar, do you believe him?
If love is blind, why is lingerie so popular?
If pro is the opposite of con, is progress the opposite of congress?
If the #2 pencil is the most popular, why's it still #2?
If you ate pasta and anti-pasta, would you still be hungry?
Is there a Dr. Salt?
Isn't it a little scary that a doctor’s work is called “practice”?
Why does the word "monosyllabic" have so many syllables?
What was the best thing before sliced bread?
What's another word for thesaurus?
Why do we drive on parkways and park on driveways?
Can fat people go skinny-dipping?
Why are there Braille signs on drive-up ATM's?
How come you never hear about gruntled employees?
Where are Preparations A through G?

And my personal fav:

If you try to fail, and succeed, which have you done?