You're familiar with rock n roll legend Chubby Checker - the man who gave the world 'The Twist' back in the 60s.
Well, Checker has launched a $500 million lawsuit against an app that claims to be able to estimate the size of a man's penis from his shoe size.
The app, as you might have guessed, is called The Chubby Checker.
The singer is seeking damages from two computer companies - Hewlett-Packard and its subsidiary Palm Incorporated.
Checker's lawyers say the app has caused "irreparable damage and harm" by associating the Checker name with "obscene, sexual connotation and images".
"This lawsuit is about preserving the integrity and legacy of a man who has spent years working hard at his musical craft and has earned the position of one of the greatest musical entertainers of all time," said lawyer Willie Gary.
"We cannot sit idly and watch as technology giants or anyone else exploits the name or likeness of an innocent person with the goal of making millions of dollars."
The app was created by a studio called Magic Apps.
According to WebOSNation, Hewlett-Packard and Palm say the app was removed from all their listings last September.
"Any of you ladies out there just start seeing someone new and wondering what the size of their member is? ... All you need to do is find out the man's shoe size and plug it in and ... there is no need for disappointment or surprise."
The developers also said the Chubby Checker app can accept shoes sizes from the U.S., the U.K., and Europe.
Checker, 71, was born with the name Ernest Evans. He trademarked his stage name in 1997 and says he owns the rights to it.
By using it for the app, Checker says it gives people the impression he endorses it.
Of course, you have to wonder if a lawsuit - and all the attention that goes with it - is really worth it.
Apparently, the app has only been downloaded 84 times.
Chubby Checker was in the red chair a few seasons ago. You can see that interview here starting around the 26:30 mark.