If you’re of an age, you can’t forget it: That jingle, insistently catchy, as maddening as the one for the Mister Softee truck. “Cellino & Barnes! Injury attorneys! 800-888-8888!” It first appeared in 1998, haunted generations, and if Roy Cellino Jr. and Steve Barnes had not squabbled their empire into dissolution shortly before Barnes crashed his plane in 2020, we might be listening to it yet.