That's a good point. It's low dosage toxicity is about all I can say in response, and I may be off base, but again, can you see most women doing this? Or guys that study library science or women's studies? It's all in fun, I know, but why is it fun? The players on the field are wearing protective armor, and sometimes not enough if it. The painted faced fans, I think, are play-channeling the fury of Nordic warriors or Comanche braves. In battle, the berserkers were subject to fits of frenzy. They would howl like wild beasts, foam at the mouth, and gnaw the rims of their shields. According to belief, during these fits, they were immune to steel and fire, and made great havoc in the ranks of the enemy. When this fever abated, they were weak and tame. Accounts can be found in the sagas
But usually, they are: I know these aren't americans, but they're on their way to a soccer match and about to go berserk.