I believe (I'm at work) that the CMT sang it as:

We never eat cookies because they have yeast
And one little bite turns a man to a beast
Can you imagine a sadder disgrace
Than a man in the gutter with crumbs on his face?

Also

We never eat fruitcake because it has rum
And one little bite turns a man to a bum
Can you imagine a sorrier sight
Than a man eating fruitcake until he gets tight?

At some point I also ran across

We don't approve back rubs, we think they're a crime
We'll alway oppose them in song and in rhyme
We just can't approve back rubs, they're much worse than gin
When you think of the alcohol absorbed through your skin.