Lyrics:

My grandpa had a sayin' that I got from him, no doubt
One day he had me loadin' hay 'til I was plumb wore out
I said, "If I load any more, this mule will be zigzagging"
He said, "Don't worry 'bout the mule, now you just load the wagon"
Don't you worry 'bout the mule, now you just load the wagon
Pile it on 'til you can see them old springs a-saggin'
I ain't seen a load we couldn't pull, and I ain't braggin'
Don't you worry 'bout the mule, now you just load the wagon

I married me a country girl, and I knew I'd found a winner
I told her to fix a couple chickens and a hen for dinner
She said, "If you eat all that stuff, you'll bend over gagging"
I said, "Don't worry 'bout the mule, now you just load the wagon"
Don't you worry 'bout the mule, now you just load the wagon
Pile it on 'til you can see them old springs a-saggin'
I ain't seen a load we couldn't pull, and I ain't braggin'
Don't you worry 'bout the mule, now you just load the wagon

She asked if I want children, I said, "Eight or ten"
"Well then, we'd better soon get started," she said with a grin
"But feedin' all that bunch is gonna keep your butt a-dragging"
I said, "Don't worry 'bout the mule, now you just load the wagon"
Don't you worry 'bout the mule, now you just load the wagon
Pile it on 'til you can see them old springs a-saggin'
I ain't seen a load we couldn't pull, and I ain't braggin'
Don't you worry 'bout the mule, now you just load the wagon