The youth, who cannot be named because he is aged under the age of 18, pleaded guilty yesterday to recklessly causing injury, assault, trespass, theft and two counts of threatening to inflict serious injury.

Those offences also breached two existing youth supervision orders. The boy has been a regular in court during the past two years.

In November last year he and four co-offenders jumped a fence to get into waste food at Centro supermarket. They threw the food around, littering the area.

But the most serious offending happened since the start of May this year.

On the evening of May 5 the youth was watching television when he spilt coffee. He was asked to clean up the mess but instead became abusive and aggressive towards a carer.

He threw his cup of coffee over a social worker before hitting and kicking the man. The youth then told the carer he was going to “bottle” him.

When police arrived the youth said he was angry and agitated at the time, but regretted his behaviour.

Last Sunday a similar incident happened when the youth became violent and aggressive towards a social worker.

He hit, kicked and spat at the carer’s head and body, causing the worker to suffer bleeding from the mouth.

The youth then looked for a bottle in his room and the carer was concerned the youth was seeking a weapon to arm himself.

A defence solicitor said her client had an intellectual disability and behaviour problems.

She said when she tried to gain instructions about the offences yesterday the youth didn’t want to hear the summaries of the charges because he was embarrassed.

A magistrate said he knew that life for the child was more difficult for him than most other kids.

However, he said having an intellectual disability was not a get-out-of-jail-free card and everyone in the community was entitled to the protection of the law.

“You can’t go off like a skyrocket when someone asked you to do something,” he said.

The youth was sentenced to serve four months in a youth detection centre.

Yesterday’s case went ahead despite the police preparing another brief of evidence on other assault-related charges.

The youth was arrested on Monday and has already spent four days in custody which will counted as days already served.