The economy is changing, oil price is always either up or down, and its in a state of constant change. But don't sound like an idiot when you're trying to explain it. Take cues from this video, which explains it in a simple manner that everyone can understand.
And since the price of oil is so directly linked to our economy in a complex way, this video does a good job of describing what's going on for those of us lacking in an economics background to grasp the situation. Check out the video after the jump! [Epipheo]