Whenever we win, I try to be a good winner and not whoop it up by the other team's fans. And that is usually not a problem for me. But leaving the stadium, surrounded by sad (and drunk) Wisky fans, I nearly burst holding it in. I did do a few wooh!'s under my breath, though. Never felt that kind of euphoria before, and I have been going to lots of TCU games since 1965, when I was a Freshman. The worse winners I have encountered at ACS were the Tulsa fans.
OTOH, I am in a pretty surley mood after a loss, but I would stay quiet until I got in the car. After a few "interventions" by my wife and daughter, I have learned to relax more after a loss, and not take it as hard.