rom the Bradford Exchange shilling Elvis plates to Ben & Jerry’s dreaming up Cherry Garcia and Phish Food, hucksters have long cashed in on the devotion of rock fans. But Jimmy Buffett devotees possess a unique appetite for, well, anything Margaritaville.

No one knows this as well as Buffett. This guy has a talent for turning his tunes into tacky knickknacks, mass-marketed munchies and a financial empire. With his annual tour bringing him to the Comcast Center in Mansfield Thursday (scattered tickets remain) and Saturday (sold out), Buffett continues to generate megabucks.

But it wasn’t until we dug into “Margaritaville” that we realized how deep his genius runs. Buffett’s signature song has spun off more products than it has lyrics. Just 206 words long, there’s not an unexploited verse. And yet, there are so many untapped lines.