Says who? You? Who died and made you the boss?
Standing the whole game is silly and selfish and disrespectful to other fans who are short, physically can't stand for 3 hours, old, disabled war veterans, or kids, all of which paid the same amount of money as YOU did to WATCH the game (not your back).
What ever happened to common courtesy and respect for fellow fans?
You can yell just as loud sitting (respecting others rights to watch the game) as you can standing.