Before Columbus' discovery....

Before Columbus' discovery why did mankind think the Earth was flat?

http://www.basicjokes.com/djoke.php?id=2427

Why do croutons come in airtight...

Why do croutons come in airtight packages? Aren`t they just stale bread to begin with?

http://www.jokes-db.com/jokes/deep-thoughts-jokes

Why is the man who invests ...

Why is the man who invests all your money called a broker?

http://www.jokes-db.com/jokes/deep-thoughts-jokes

When someone asks you...

When someone asks you, "A penny for your thoughts" and you put your two cents in . . . what happens to the other penny?

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If love is blind...

If love is blind, why is lingerie so popular?