One of Howard Stern's favorite radio guests has declared war on Nick Cannon -- accusing Mr. Mariah Carey of stealing the name of a reality show he'd been working on for years.
Johnny Fratto -- son of infamous mob boss Louis "Cock-Eyed" Fratto -- claims he came up with a reality show back in 2004 called "Son of a Gun" ... centered around the daily life of a post-mafia family.
Fratto claims he's come "very close" to landing a deal with several networks -- and even produced two pilot episodes ... which he's still trying to get on the air.
But just a few days ago, MTV announced Cannon is producing a reality show with the SAME NAME -- "Son of a Gun" -- Nick's show centers around an up-and-coming rapper named Cory Gunz.
Fratto is pissed -- claiming Cannon not only jacked his title -- but also stole the mafia-themed "style" Fratto has used in his pilot episodes.
Fratto has now fired off a cease and desist letter to MTV -- ripping Nick as a "B-list actor" -- and demanding they shut down all plans to move forward with their show ... unless they change the title.
So far, no comment from both MTV and Nick Cannon.
Howard Stern Guest -- Nick Cannon Stole My TV Show
2/8/2011 9:00 AM PST BY TMZ STAFF
Get TMZ Breaking News alerts to your inbox