Lawyers for the fast-food chain are calling his federal lawsuit, filed in Manhattan, another attempt to "burnish his gangsta rapper persona by distorting beyond all recognition a bona fide, good faith offer."
The squabble is over a fake letter sent out by Taco Bell Corp. asking 50 Cent to change his name for one day to 79 Cent, 89 Cent or 99 Cent to help publicize its value menu.
In return, the company offered to donate $10,000 to the charity of his choice.
The rapper, whose real name is Curtis Jackson, has sued for trademark infringement.
Jackson's attorney, Peter Raymond, says he wonders why Taco Bell would use his client's name in an ad campaign.