Take a look at my girlfriend
She's the only one I got (ba ba da da)
Not much of a girlfriend
She never seems to eat a lot.

The story:

It came on the radio in a grocery store while
I was checking out and I told my friend to listen for this line because it always cracks me up. She asked me what the line was and when I told her these lyrics, the check-out clerk told me I was wrong.