Christina Aguilera's Super Bowl XLV lyrics flub?

I hated her rendition of the National Anthem at the Super Bowl last sunday, but to be fair, I didn't see where she fucked up the lyrics all that badly, so what's all the fuss about. Other then butchering the Anthem, where was the flub?

BTW, who told that ugly mother-fucker she could sing.

She was suppose to sing "O'er the ramparts we watched were so gallantly streaming" in the fourth line, but she repeated the second line again, and then changed it from "What so proudly we hailed at the twilight's last gleaming," to "What so proudly we watched at the twilight's last Reaming."

shes fucked up the O'er the Ramparts we watched" line pretty bad then went into extra divaness holding every fucking not because she knew she fucked up.

Worst anthem i have heard from a serious singer , this wasnt Roseanne or Carl Lewis people this was a grammy winner and she sounded like shit and couldnt even get the worlds right