A teenager cocked the shotgun by his side and warned his sprinting "demonic" neighbour wielding an axe handle to stop before blasting him at close range, a court was told.
Nathan Joseph Price recounted to police the events outside his Porter Street home in Parkes in NSW on June 24, 2019, that ended with the fatal shooting of Jesse Herridge.
An 18-year-old Price says in a video played before the NSW Supreme Court on Friday that there was no stopping his 25-year-old neighbour who was acting like a demon.
"Have you ever dealt with a coming down crack head skitzing out?" he asks the interviewing officer.
Price has pleaded not guilty to the murder and to the lesser charge of unlawful killing, saying he was protecting his mother.
Justice Stephen Rothman has to decide in the judge-alone trial whether the shooting was done in self-defence.
That afternoon an acquaintance walked into Price's home balling her eyes out, Price said in his interview.
"This cockhead is going off at me all because I asked his dog to shut up," he recalled her saying.
The court was earlier told she walked passed and yelled out "shut the f*** up" at his barking dogs.
The animal owner shouted in return: "You shut the f*** up you redheaded slut."
Price's mother Tracey Simpson was in a "protective mood" when she went outside and copped a mouthful from down the street.
"That gronk won't tell my dogs what to do ... Come here and have a go you slut," Mr Herridge allegedly said to Price's mother.
Ms Simpson earlier told the court Mr Herridge's eyes were popping out of his head like he "wanted to hurt someone, it didn't matter who it was", as he advanced towards their home.
A toxicology report later found high levels of methylamphetamine in his blood.
Mr Herridge walked back to his front yard and retrieved the axe handle from underneath his car and began sprinting towards the neighbours who had moved in about three months prior.
Price first searched for a baseball bat unsuccessfully before assembling a shortened 12-gauge shotgun and walking outside with it down by his side.
"I was just planning on telling him to stop ... not using the gun it was just an intimidation thing," he said.
"I knew for a fact he was coming straight for my mother and I told him what I had and told him to drop it."
But Mr Herridge ran towards him with the weapon raised higher "like a big KO ... so I went bang".
He was asked why he did not run away.
"I guarantee if I ran away he would turn around and go straight for my mum."
The sequence of events has been disputed by Mr Herridge's partner of 10 years who said Ms Simpson began hurling the abuse first.
Ms Simpson remembered seeing "the boys wrestling" before she blacked out from the stress affecting her epilepsy.
Price appeared from Parklea Prison wearing a full PPE suit on Friday afternoon after he was out of the protective gear in the morning because he was "rushed out," he said.
He caught COVID-19 in the private prison where 159 inmates have now tested positive.
The trial continues.