lies

[munkeewrench]

I know this isn't that original, but I think I thought of this version on my own?
Anyway:
Assume everything you have ever said has been a lie. You then say: "Everything I say is a lie."
Are you telling the truth by saying this? No, because if you were, it would make the statement a lie.
Are you telling a lie by saying this? No, because if you were, the statement would be the truth.

=)