I don't find any mention of Warren Buffett, but there's this about Jimmy:

From "Trance-Formation of America" by Cathy O'Brien:

"An example of a typical Caribbean drug operation centered around the NCL port of call. Key West, Florida. Houston took Kelly and me to a nearby tennis court under the guise of playing tennis. In reality, I was to meet with CIA Operative Jimmy Buffett, who devoted more time to the proliferation of CIA criminal covert activity than he did to his music career cover. Buffett was playing tennis. Referring to him as though he were to be my tennis instructor, Houston said, "There's your instructor. As soon as he gathers the balls, he should be over here to meet you."

Noticing us, Buffett strode over and shook hands with Houston. "Hi, Jimmy/ Houston said as though they were old buddies.

"Hi, Alex and Elemer," Buffett responded, sarcastically using Houston's stage name.

"Oh," Houston said. Never one to know an insult when he heard it, he continued, "What do your friends call you?"

"What does it malter to you?" Buffett asked. "Uncle calls me Jim. I take it you're not the contact."

Houston pointed to me, "She is."

"That's more like it," Buffett smiled. "A little Byrd told me I'd be meeting with a Diamond in the Rough."

"I prefer a Diamond in the Buff," he said, "I've got a studio across the street."

As we walked toward his studio, I was oblivious to the meaning behind his conversation. with Houston and commented, "I understand you're an instructor. I wish I had brought my racquet."

"I'm not that kind of an instructor," Buffett explained, "I'm a point man for Uncle. And you've got an appointment with me. I have some instructions to give you." As we entered his studio, he said, "Welcome to paradise," and gestured me in. We went into the small living quarters, which may have appeared even smaller due to the electronic equipment, acoustic guitars, and furniture that filled the room. A black mirrored coffee table, atypical of cocaine users I'd known, was the clearest spot in the room. A gold razor blade, cocaine residue, an ashtray full of marijuana roaches, and a fanned deck of card with the queen of hearts on top lay on the table. Tropical plants further cluttered the room. Standing between a perched, stuffed parrot and a banana tree, Buffett was saying, "Key West is a key place to be. It's the key to the Caribbean - Cuba, Panama - anyplace that means anything to Uncle these days, I hold the keys. I'm keeper of the keys and I hold a few of yours." Looking at his parrot, he continued, "The bird/Byrd says you respond to pair-o-dice, look deep into the parrot eyes."

I did as instructed, and Buffett popped out the bird's ruby red eyes, which actually were dice, into his hand. "Roll your eyes high while I roll my pair-odice," he ordered as he rolled the dice across the table. Stopping at the deck of cards, he picked up the jack of diamonds. "I am a jack of all trades," he cryptically continued. "And I trade in whatever Uncle orders. An order has been placed. You must follow orders and go to that place. Go to the White House Inn at the pier. Carry your laundry bag (full of cash) with you, and see the man in black. (My Cuban contact almost always wore a conspicuous black trench coat.) There is a launderman on the dock itself. They do all my laundering for me, and will be expecting you. Watch for the sea-man with the duffel bag. When you see the military green duffel bag, approach the desk. When he says, "I need this laundered, but I do not have the time," you say, "Welcome to Paradise. I will make sure it is cleaned and delivered on time." Then give him your duffel bag of 'laundry' and say, "This has been properly laundered for you". Take the duffel bag. It will be light as a feather. Return to the Inn and enjoy the buffet."

Changing modes, Buffett unzipped his shorts as he asked, "Do you like a buffet? I have a Buffett buffet for you now. And if is Paradise!"

I carried out the drug transaction as ordered, the whole ordeal lasting a matter of minutes. A buffet was spread in the courtyard of the White House Inn at 4:00 PM just as Buffett said it would be. But due to the food and water deprivation necessary to maintaining my mind-controlled trance, Houston forbid me from carrying out this last part of Buffett's instructions."