Well, If we have not yet come to an agreement to the definition of "juggling", how can some people define so easily themselves and/or others as being jugglers?
Some people think juggling is just a cool way of making new friends, and they're probably right; but from assuming you like juggling and jugglers, is way different from saying "I am a juggler".
I also remember a couple of times watching some guys just try to juggle for the first time, and get a quite good feeling just from the way he or she held the props. I could see there was instantly a special relacion between them and the object, and remember thinking: "you're a juggler, you just don't know it yet"
I believe every juggler passes through some sort or "revelation". There is a particular moment where you're just moving your props and you sudenly realize you're a juggler or to me at least it happened that way.