What is the name of this country song that was on this commercial?

I was at my school dance when the DJ put on this poppy western song. It had an old man singing. All of the lyrics I remember was....ready to go....now out the back door. Oh yeah it said yea haw in the beggining of the song. It was on this commercial for something. At the dance every body was doing these dances with there feet. It sounded like the theme song for this kid show Back at the Barnyard. Please help!!!!