A man named Gary dies and goes to heaven. When he gets there, Saint Peter hands him a clock with his name on it.
"What's this?" Gary asks, turning the clock over in his hand.
"That's your lie clock. Every time you told a lie, the clock ticked once. We have a whole wall of every mortal clock in the back."
So Saint Pete led Gary back to the wall, where Gary was amazed to see all the names on the wall. "Wow, look!" he exclaimed, "Harrison Ford just lied! And there is Betty White's, I bet that ticks pretty often!"
THen he noticed something: one clock was missing. He asked Peter, "Where is President Obama's clock?"
Peter replied, "Oh, that? God keeps it in his office. He uses it as a fan."