Brandon Lee is facing murder charges for the deaths of his mom Christa Lee, 58, and his girlfriend, Krystal Hylton, 28.
Among the things he told the jury about was his mother's last breath.
"Die...die then. Die. And then we went to the ground and I'm like 'just die, if you want to die.' And she's there. So when she falls backwards and she's laying there," he said. "I'm like, 'if you want to die, just die.' And at that point, my mom, and it was the weirdest thing, she was lying down and when she hit the ground she was just like this. I'm just sitting there looking like...this is stupid, man. What are you making me do here?"
"It was like I wasn't living this life," he said.
And the jury heard what happened to his girlfriend the day she was killed.
Cary man takes the stand, describes killing mother, girlfriend in 2015
"I stood up and I snapped," he said. "Boom. And I choked her (expletive) and I said...I'm thinking the whole time, 'this is all your fault. This is your fault.'"
After that, he said, he was disgusted with himself.
"'Cause I'm looking at this situation like, this is out of control. 'What have you become?'"
The 38-year-old said he didn't plan on killing his mother but was pushed to that point because she was provoking him.
He didn't answer any of the prosecution's questions, so the judge said he is going to take Tuesday night to decide whether to strike Lee's testimony in its entirety or declare a mistrial.
On Monday, as a psychiatrist testified about Lee's traumatic upbringing and dependency on alcohol, Lee became agitated and had an outburst in the courtroom.
Psychiatrist says traumatic upbringing, addiction caused Cary man to act impulsively when he killed girlfriend, mother in 2015
The psychiatrist, Dr. Moria Artigues, was testifying that Lee's fall from Wall Street and modeling led to a downward spiral into addiction.
She said he was void of feelings and pointed to the confession tape, where he "matter-of-factly" described killing his mom and girlfriend.
The trial saw chilling evidence Friday as prosecutors played video of Lee being interrogated and confessing to details of the December 2015 crime.
On the first day of trial, prosecutors showed Lee's phone call to police and video interview with investigators. They say it showed he had a "cool state of mind," which is an element of first-degree murder.
His defense attorneys argue he did not plan to kill either of them.