Place the cigarette on the bar in front of you.

Put your index finger, pointing down at the bar, in front of the cigarette.

Move your index finger forward and as you do, secretly and lightly blow on the cigarette. Everyone will be looking at the cigarette and your finger. They won't notice you blowing.

Once the cigarette moves a short distance away, place the the pinky side of your hand flat on the bar and blow on it. The air will deflect off of your hand and blow the cigarette back to you. See photos for examples.