In my normal life I am a calm, considered, measured and professional individual but for reasons beyond my understanding, when the game starts I let loose my inner mentalist. I can keep a simmering lid on it mostly but at multiple times during a game I often find myself on my feet roaring a blistering, tourettes-style invective in the direction of the officials and/or the opposition (never at our own players mind). I cringe when afterwards I think about my out-of-control behaviour sometimes and wonder what those around me must think when this rabid thug makes these pop-up appearances. Worst is when we play the rags. I barely recognise myself. But I justify it by considering it as my City psychotherapy session - this stuff needs an outlet!
I keep this in mind when the folks sat around me do their own version of supporting the team.