Time is something priceless. Time is a special privilege that God gave us, so we all must treasure it. However, there are some people who lose their way, wallow theirselves in sensual pleasure. Those social evils must be eliminated. And this picture is a message to those people: If you are not treasure your incident value, you are surely close to death. If you are wasting your time doing something bad (using drugs, prostitution, etc), you are burning yourselves also. It's not too late to correct your mistakes, stay away from those evil things and you will alive!
Here is the origin of the upper picture: