Tennent's fan Dave Morrison posted the video on the Big Juicy Appreciation Society page on Facebook entitled "A wee song about wannabe beers".
In the video, which already has nearly 500 likes, Dave can be seen singing the song, which goes to the tune of "King of the Swingers", and playing a guitar he's created using a Tennent's mini-keg.
Extolling the virtues of the Glasgow-based beer, the song pokes fun at those other brands who just can't compare.
The musician, who is based on Orkney and said he wrote the tune as a bit of fun, explained that he was inspired by his favourite Scottish beer to make the instrument, he said: "I enjoy making unusual instruments and had the beer keg lying around after drinking it, I'm a big Tennent's fan and thought it would be fun to make into a quirky guitar."
It seems his fellow 'Big Juicy' (as a pint of Tennent's is affectionately known) are big fans of his efforts, with one person telling him to "take a bow" and others calling for him to be given a "lifetime supply" and the "freedom of Wellpark".