I'm somewhere between Chaotic Good and Chaotic Neutral.
I will admit this sounds a bit like me, lol.
Chaotic Neutral characters do whatever the hell they like and damn the consequences (unless they're too noble or hurtful, watch out for that part!). Some say they're the ultimate free spirits, others that they're just crazy. Either way, there's no telling what they'll decide to do next - their main, and often only, concern is their own freedom. Whose side are they on? It's doubted that they even know themselves. Nobody else does. In some ways their inherent uncertainty makes them an unknown quantity to deal with most times so they border on Jerkass in terms of their self-centered perception of the world, though they usually do have some redeeming features. Chaotic Neutrals detest the self righteous and believe in power to the individual. These characters are also useful in any story that involves something that isn't damnably black and white in the outcomes.
The Chaotic Neutral character may have a kind enough heart and even help out others sometimes, but they do not feel committed to helping others as they are random, and sometimes they are nothing but an amoral nutjob, not consciously thinking about the consequences of their actions. Occasionally, if a character runs the entire gamut of alignments with their actions (inevitably failing at Good), they can be classed as Chaotic Neutral on average, or perhaps True Neutral (or Lawful Neutral).
Chaotic Neutral is both an easy and difficult alignment to play as. Easy, because its chaos and neutrality allows a player to do what they please, and hard because you really have to be careful about not annoying people when you can do whatever you want. Many players of Chaotic Neutral also have a tendency to end up in Good groups, playing Chaotic Good characters and doing things that are generally good, not just selfish.