The famous Naked Cowboy is suing CBS for the shirt off their back ... claiming they violated his trademark by having a naked guy playing a guitar featured on one of their soaps.
In a lawsuit filed in New York, the Naked Cowboy claims the CBS show "The Bold and the Beautiful" featured a character dressed as a cowboy, wearing only underwear, and playing a guitar -- which he claims is his thing.
He's suing for trademark infringement, among other things, and asking for $1.5 million in damages.
This is not the first legal gunfight that the Cowboy has started. He sued Mars Inc. in 2008 for $6 million after an ad depicting M&Ms in a cowboy hat and underwear appeared in Times Square. That case has been settled for an undisclosed amount of money.