The weapons possession trial of former NBA player Sebastian Telfair turned into an episode of “Basketball Wives” Monday when the ex-Portland Trailblazer’s mistress and estranged wife both took the stand against him — as another gal pal in the gallery interrupted the proceedings.

Mistress Caterina Scotto was in the middle of explaining how her relationship with the married hoopster ran hot and cold, but stopped her testimony to complain that a woman in the gallery was intimidating her.

“There’s this lady that keeps mouthing things to me,” Scotto said to Brooklyn Supreme Court Justice John Hecht. “And it’s making me really uncomfortable.”

That woman, Patricia Ciccone, was called into the hallway for questioning, where she said she was just Telfair’s friend. Hecht allowed her to stay in the courtroom, but warned her to not communicate with the witnesses.

Earlier in the day, as estranged wife Samantha Telfair identified some of the guns found in her hubby’s pick-up, the hoopster repeatedly yawned loudly at the defense table and twisted around to meet eyes with Ciccone.

The ex-athlete was so distracting that Hecht even put his behavior on the record.

“The defendant is turning to the audience and making facial expressions the jury can see,” the judge said, before telling Telfair to stop.

Sebasatian Telfair settled down after the warning, but Ciccone could be heard from across the courtroom chuckling as Samantha Telfair testified that she had seen her husband’s with multiple weapons, including a gas-operated submachine gun prosecutors say he had on him when he was arrested.

Scotto, meanwhile, admitted she helped coordinate shipping Telfair’s cars, including the Ford F-150 pickup he was later arrested in, from Florida to Brooklyn. She also told jurors that she’d rented storage units for him.

Scotto said she saw Telfair with a gun on multiple occasions, and giggled as she recalled he would call firearms “biscuits.”

Telfair was busted in Brooklyn in June 2017 carrying three loaded pistols ammunition, extended magazine, and a ballistic vest in his blue F-150 pickup, which Scotto said he used to keep in her garage.

The ex-girlfriend also confessed to taking a couple of his framed basketball jerseys from the onetime athlete’s unit before she allowed the company to auction his other memorabilia off.

“Did you ever sell any of that property for yourself?” his defense attorney Richard Southard asked Scotto.

“Why?” the 26-year-old said. “It’s not worth anything.”