Just Heard A Song On Country Radio.
Some Of The Lyrics Are:

Someone Helped Me Out Once
The Way I'm Helping You
You Don't Owe Me Nothing
But Don't Let The Chain End With You.

They May Not Be The Exact Words But It Goes On To Say That One Person Stopped To Help Another With A Flat Tire. And He Said You Don't Owe Me Anything. The Girl Went Into Grab Lunch And There Was A Young Waitress About 8 Months Pregnant. She Left Her A Hundred Dollar Bill And Went On The The Aobve Lyrics:

Please Help Me Identify This Song.