*cough* Um, I may or may not have done exactly that during the NCAA second round at Wells Fargo last winter... I didn't start it, I just finished it (with style!).
Florida State was playing Oklahoma State, and the rather large group of ISU students sitting in our makeshift Cyclone Alley were cheering just as hard for the Cowgirls as we do for the Cyclones. We were behind the east basket, with the FSU pep band in front of us. They eventually got pissed off with our constant heckling and free-throw-distractions, and started yelling back at us. I turned my attention to the pep band, (and ultimately ended up pissing off their director until he joined in the screaming). The Rutgers band was already sitting next to the FSU band, waiting for their game to start. As FSU left after losing (director still screaming at me), Rutgers band members started heckling the Cyclones. Now, the Rutgers pep band was the motliest collection of physical misfits, nerds, and all-around bizarre human beings that I have ever seen, and I wasn't about to getted yelled at by that. So I gave it back to them, too.
It was a great time. Too bad we lost that game, but the Sisters played hard, and were up against a team in a totally different league.