Having been fishing many a time with Eric, you discover that there is more than just a singer behind this legendary man. All his songs (I've had the privilege of hearing his old stuff at his house on his even more legendary guitar) have a meaning. Cocaine, even though written by J. J. Cale is no exception: Eric made it his own and people know his version more than the writer's. The message is simple: Use it, be a slave to it. There is no escaping from it.