From the article...
This means that when a Congressman Joe Wilson shouts "You lie!" at Barack Obama, you respond, "Representative Wilson was wrong. Obama lies a lot."
LOL! The author is spot on!
I'm feeling dumb. I usually manage to "get" the humor but this one goes over my head. Joe Wilson says "You lie!" to Obama and the response should be "That's wrong, Obama lies a lot."
I totally don't get this.