Jody Craig Martin was too "wasted" to remember ramming into the back of two cars in separate incidents on March 30.
Martin was driving on Grey St at 4.56pm when he hit the back of a car stopped at an intersection. Police prosecutor Sergeant Rachel Willemsen told Whanganui District Court Martin stopped to yell at the victim before driving away from the scene "erratically".
"The road was dry and well lit by bright sunshine," Ms Willemsen said.
Martin, who did not have a current driver's licence, drove into Parsons St, where he tailgated another car at the intersection with Great North Rd at 5.07pm. He stopped behind the other car but then rammed the back of it.
He then "pulled into the oncoming lane and sped through a stop sign on to Great North Rd," Ms Willemsen said.
Martin pleaded guilty yesterday to dangerous driving, two counts of failing to provide particulars, and two counts of failing to stop and ascertain injury.
Nobody was injured in the crashes but there was vehicle damage.
He told police "he was wasted and didn't remember very much", Ms Willemsen said.
Judge David Cameron said it was interesting that Martin tailgated the second victim and stopped behind them before ramming them. "It's antisocial behaviour in the extreme and the court is not going to tolerate it," he said.
Defence lawyer Jamie Waugh pointed out there was no assault charge and, if it was being said that the second ramming was intentional, they would need to have a disputed facts hearing.
Mr Waugh said Martin told him one of the victims was his "auntie".
Judge Cameron said the offending was "extremely serious" and said it was getting "more and more bizarre".
He referred the matter to Restorative Justice. "They [the victims] have to be given the opportunity to meet with him if they so wish. I'm sure they would be delighted to meet up with the person that rammed them. I'm saying that somewhat facetiously, of course."
He remanded Martin to July 1 for sentence and warned he was probably looking at electronically monitored detention.