Elvis Costello is still upset with moviemaker Jared Hess for using his mid-1980s alter-ego Napoleon Dynamite in his hit 2004 film - and refusing to credit the rocker.
Hess maintains the name of his socially-challenged film character was something he dreamed up - but Costello disputes this.
Costello tells America's Spin magazine, "The guy just denies completely that I made the name up... but I invented it.
"Maybe somebody told him the name and he truly feels that he came about it by chance. But it's two words that you're never going to hear together."