This shocking video footage shows a drunk man wielding a chainsaw in a residential street at 6am.
Gintautas Vitkus argued with friends during a drinking session that went on until the early hours of Sunday morning.
The 31-year-old stormed off, leaving behind his wallet and mobile phone, at a house in Halcombe Road, West Derby.
But the Lithuanian national returned in his car, got out the bladed power tool and menacingly approached the home.
When arrested by police afterwards, Vitkus, of Sceptre Road, Croxteth, claimed he didn't try to start the chainsaw.
However, the clip shows him return to his car, put on his warning lights, then get out and repeatedly try to rev it up – seemingly to no avail.
Vitkus later suggested he only brought the chainsaw to offer it as part payment for a loan he owed to one of his pals.
A top judge slammed this "preposterous explanation" and said he clearly intended to "cause fear of serious violence".
Liverpool Crown Court heard police received an anonymous report of a man with a chainsaw in the street on September 15 last year.
The unknown caller explained the man had left the address after a "disagreement" and he had already gone when officers arrived.
Nick Cockrell, prosecuting, said the two occupants of the house refused to make statements, but said Vitkus had been drinking.
He said: "They perhaps indicated he had drunk more than he accepted in his police interview."
Vitkus was arrested when he went to Kirkby Police Station and enquired about his wallet and phone at 8.50pm that same day.
When interviewed by police, he said: "But I didn't start it."
Mr Cockrell said the Crown couldn't say whether that claim related to him not starting the chainsaw, or the dispute.
He said: "His admission in interview was he was there to try and apply pressure so he could retrieve his items."
Vitkus admitted having "a few drinks", then leaving after a row, but claimed when he returned he didn't try to start the tool.
He denied a charge of affray and was set to stand trial, but later admitted the lesser offence of threatening behaviour.
The court heard he had a small number of previous convictions, but none relevant to this case.
Judge Thomas Teague, QC, asked whether Vitkus still maintained a "preposterous explanation" given to the author of a pre-sentence report, which he said was "completely inconsistent" with his guilty plea.
The judge said: "He is suggesting – as I understand it – that the reason he took the chainsaw out was to offer it as part payment on a loan he owed, which does raise the question, why was it necessary to make repeated attempts to start it?"
Judge Teague said this was "absurd", adding: "I'm minded to dismiss it out of hand, as I am entitled to do."
Matthew O'Neill, defending, said Vitkus – who runs a cleaning business – now accepted the full facts of the prosecution case.
Judge Teague said Vitkus made "repeated attempts" to start the chainsaw.
He told him: "Your intention was clearly to cause fear and to intimidate."
Judge Teague added: "I'm glad to note from what Mr O'Neill has told me that you're not now putting the ridiculous explanation that you had taken the chainsaw to the address to offer it as part payment for a loan – if you hadn't withdrawn that explanation, I would have rejected it out of hand anyway."
Stories from Liverpool Crown Court
The judge said Vitkus' culpability was high, adding: "Your intention in my view was to cause fear of serious violence and in any view you produced a weapon – that chainsaw.
"One could not blame either of the people in that house for having a real fear."
Can you help us keep Merseyside covered?
However, he said in terms of the actual harm caused, neither victim had been willing to assist the prosecution, and while he could infer they must have been "very afraid", they were inside the house and Vitkus didn't appear to have made any determined attempt to enter the property.
He handed him a 12-month community order, six-day Rehabilitation Activity Requirement and 120 hours of unpaid work.