Punk

I often wonder what people think the term punk means. It feels like it can mean different things to different people. Sometimes people ask what kind of band I've played in or what kind of music I listen to and I contemplate my response for a moment and then reluctantly say "punk." I wonder what they think. Do they think I'm listening to really shitty music like the exploited or the casualities? Not that I don't listen to shitty music, it's just that I don't want to be associated with those really really bad punk bands primarily because I never liked them.