In my stories, he does. Also, it's helpful for misdirection if one knows how to say the truth in a sarcastic tone.
LEX: Yes, officer. I just shot Superman and framed my wife for the killing.
OFFICER: You're right, Mr. Luthor. That does sound implausible. We'll try to figure out the correct meaning to this evidence right away, sir!
VirginiaR. "On the long road, take small steps." -- Jor-el, "The Foundling" --- "clearly there is a lack of understanding between those two... he speaks Lunkheadanian and she Stubbornanian" -- chelo.