Help me identify this country song

I remember this song from when I was a little girl. I remember the idea behind it and maybe some of the lyrics

The song was about a trucker dad and his little boy. The little boy always had to have dad pull over to find restrooms because the little boy always had to "go".

These may be actual lyrics or just what my 7 year old brain remembered at the time

"Dad I gotta go! Dad I gotta go!" and then something about taking the boy "to the nearest Texaco"

Try..

"Dad I gotta go" by Cledus Maggard & The Citizen's Band
http://h1.ripway.com/Fizz/16-CledusM...adIGottaGo.mp3