50 Cent has been offered a $10,000 (GBP5,000) donation to the charity of his choice by a U.S. fast food firm - if he agrees to change his name for one day.
The challenge, issued by Taco Bell, stipulates that 50, real name Curtis Jackson, must stop by one of the chain's restaurants and rap his order at the drive-thru window - using a new moniker: 79 Cent, 89 Cent or 99 Cent.
If he completes the deal, Taco Bell managers will feed everyone in that particular eatery for free, in addition to the charity donation.
Taco Bell President and CEO Greg Creed has written a letter to the star urging him to step up to the challenge, according to OK! magazine.
The letter reads: "We know that you adopted the name 50 Cent years ago as a metaphor for change. We at Taco Bell are also huge advocates of change...
"We encourage you to 'Think Outside the Bun' and hope you accept our offer."
The In Da Club hitmaker has yet to respond to the offer.