This is the kind of person that will bitch at you in a jam packed crowd if you bump into them. Here's some advice:
Go THE FUCK home.
I went to a Seattle Mariners game a couple weeks ago and I was, I'll admit, a little drunk. BUT, I was sitting a row behind these two middle-aged folks who were obvious seattle'ites and people in seattle are notoriously nice(?). Anyhoo, they told me to stop screaming whenever the M's struck someone out or scored a rare run. I kindly asked the woman if she knew she was at a sporting event and then proceeded to ask her if she had any offs to fuck.