Well, Newfoundlander, I figured any song about a prison would have to be in Cowpie, the country lyrics archive. As would be expected, Cowpie has lots of songs with the word "prison" - but the Digital Tradition right here has lots more. Could it be that, despite the stereotype of country music, that it's us folkies who are the real jailbirds? No luck finding your song, though
-Joe Offer-