Christina Aguilera butchered the National Anthem back in February during the Super Bowl and now Cyndi Lauper has done it too! Cyndi was performing it at the US Open over the weekend and messed up the line "were so gallantly streaming" by singing "as our flag was still streaming"! Thanks to the NYPost, there's video after the jump!

Who's mistake was worse - Cyndi Lauper's or Christina Aguilera's?

Compare it Christina Aguilera's performance!