Nate Diaz gonna Nate Diaz.

The controversial UFC star sparked up a joint — in a room full of reporters — before doing some light boxing on Wednesday during an open workout session.

Diaz, 34, later clarified that he was smoking a CBD joint with no THC, the psychoactive compound found in marijuana, which is prohibited by the World Anti-Doping Agency within 24 hours of a fight.

Still, the sight of a world-class athlete such as Diaz — lighting up a joint at a public, UFC-sponsored workout before his matchup with Anthony Pettis on Saturday — was enough to get people talking on Twitter.

“Definitely the first time that this happened at a UFC open workout,” said MMA reporter Aaron Bronsteter.

“Nate Diaz gives zero f–ks,” wrote user @bubbagumpino.

Many noted how Diaz chose to “pass” the joint off to people in the crowd — a move that earned him praise online.

“Diaz is truly a man of the people,” tweeted ABC10 reporter Sean Cunningham.

Describing the incident afterwards, Diaz told media members: “I said pass it around…It’s good etiquette, for sure.”

The always-entertaining UFC star is set to take on Pettis in the co-main event of UFC 241 on Saturday. He told reporters that the CBD he was smoking was from a company that he backs called Game Up Nutrition. The cannabidiol is legal for in-and-out-of competition use.

“I have to smoke the weed after the fight,” Diaz said, laughing. “So I had to smoke Game Up.”

The UFC and the California State Athletic Commission declined requests for comment on Diaz’s open smoke sesh when reached by multiple media outlets on Wednesday night.

UFC owner Dana White recently announced a partnership with a marijuana company called Aurora Cannabis, which plans to test the usage of CBD with athletes at the UFC Performance Institute in Las Vegas.

Studies show that CBD, which is extracted from the marijuana plant, has no psychoactive effects — but can help reduce pain, stress and inflammation. A number of MMA fighters have admitted to using it regularly.

“For people who deal with chronic pain, it’s groundbreaking,” said UFC President Dana White back in June, when the Aurora deal was announced. “I just had shoulder surgery, rotator cuff surgery, and I was going through physical therapy. The physical therapists are using CBD oil. I had never done it before and the physical therapist was using it on me.”

Describing the positivity surrounding CBD, Diaz said “it’s crazy.”

“Everybody is up on game now since they stuck their head in the book a little bit after we had to bring it to the attention,” he told reporters. “And they stepped their game up.”

It’s good…for you,”