Boomer Sooner.
Here are the lyrics.
Boomer Sooner (repeated about a million times)
O k u
Oklahoma ( repeated about a million times)
O k u.
I'm a sooner born and a sooner bred and when I die I'll be a sooner dead
Rah Oklahoma (mercifully repeated only seemingly half a million times.)
Oku
But here's the rub. When they get drunk, instead of the second stanza of Oklahoma, they all sing boomer sooner another million times) and instead of the I'm a sooner born part, they start singing Oklahoma. And they forget the Rah too.
So literally the way it is sung all too often, there are literally 3 words and an abbreviation.
Boomer Sooner
Oklahoma
Oku
Well at least when nobody is singing, it's ok.