作者chaotommy

http://www.seahawks.com/12th-Man/

http://en.wikipedia.org/wiki/12th_man_%28football%29

The 12th man or 12th player is a term for the fans within a stadium during American football and association football games. As most football leagues allow a maximum of eleven players per team on the playing field at a time, referring to a team's fans as the 12th man implies that they have a potentially helpful role in the game.

普通球隊只有11個人在場地打
第12個就是指球迷
也就是中國人所說的我的(球迷）精神與你們（球隊）同在

作者hxh167

第12人其實是表示主場優勢的意思，所以主播都拿12開玩笑，現場觀眾聲音大到發球完全聽不到四分衛的聲音，其實大家一定要去球場體會一次，而且都是從頭站到尾，沒人坐下的，板凳是擺好看的。我是只看過大學的，不過大學觀眾人比職業多，11萬人。學生更是瘋狂，學生區要站四小時，坐下甚麼都看不到，學生票一場也要美金30多元。看電視是完全體會不到美式足球的真諦的，其他運動沒差這麼多。大學足球比完還常常暴動喔!