Oh say, can you see?
If not turn on a light!

The story:

I was at my fisrt Major League baseball game(first baseball game period) and I was singing along with the person chosen to sing the anthem. I noticed people chuckling, and my dad saying, "sweetheart, it's 'by the dawns early light." I never lived it down. Every game i go to, my parents and i sing it the wrong way, then apologize to those around us.