<p>I am afraid to say that I think young “Rentheads” believe that that rowdy behavior is EXPECTED of them, and that if they don’t show that kind of very loud, um, enthusiasm, they are not “showing the love” for the show. It’s too bad. But then again, I have experienced people singing loudly along at performances of every national tour show I have attended. (As an aside, they don’t seem to notice, or care, if people give them disgusted sidelong glances. I always want to say “I came to hear the cast members sing this, and not you” but I know it would embarrass my daughter – who is also annoyed by that behavior – so I keep my lips zipped.)</p>