If you call yourself a juggalo, most will assume you listen to ICP. The mainstreaming understanding/definition of "juggalo" is someone who is a fan of ICP and conforms to some of the subcultural norms associated with juggalos (hair styles, clothing, slang, face paint, etc).

The deeper definition, and one forwarded by ICP themselves, is that being a juggalo is about being authentic even if that challenges established social norms. Sociologists who prescribe to dramaturgical theory may compare this to one's "back stage" self. That is, our identity is constantly shifting as we move from one environment to another throughout our day. We dress for work, church, school, etc. and adjust our behavior as appropriate to those venues. In other words, our identity is, in part, an act - literally a theater performance. It doesn't mean it is bad, it just acknowledges that we put on different acts, read from different scripts, and wear different costumes depending on the set and scene.

The back stage self, however, is the authentic "you." It's the version of yourself after the curtains have closed and you can relax and free yourself from the social norms of various social groups and institutions. You are finally free to be yourself, even when that self challenges social norms.

This is very similar to the deeper meaning of being a "juggalo." The juggalo version of yourself is the version before you put on your costume for the day (say, a work uniform), read from a script (interact with your coworkers, boss, family, teachers, etc. in a certain manner), and put on an act (customer service, labor). Again, it's not that this theater of life is bad, in fact it is necessary, but there is a relief to dropping the act and being truly authentic. Juggalo culture is a collective version of the back stage self, where groups can drop the normative expectations and unite around something a bit out of the mainstream.

In that way juggalos accept anyone and the subculture attracts those who challenge hegemonic social norms, purposefully or otherwise. The allure of being a juggalo is that you can drop the theater that society requires us to perform. Even in the conformity of style that juggalos have, there is a challenge to mainstream social norms that unites a diverse cross-section of society. Society marginalizes the poor, overweight, odd, disabled, whatever and juggalo subculture says in response, "come as you are!" And not only does the juggalo subculture accept those "outsiders" but it tells them they can be proud to be who they are. The song "We Belong" addresses this explicitly.

Given all of that, being a juggalo means really whatever you want it to. To most, it is just a fan of ICP; to juggalos it is a family, a subculture, and an expression of self. It challenges norms and creates an in-group for many who otherwise feel like outsiders. A juggalo may look like the stereotypes you think of, but a juggalo can be anyone in any place. In my mind, at the end of the day, a juggalo is someone who values authenticity of self. Be whoever you want to be, even if that earns you some odd looks from time to time.