A TEENAGER blames being left home alone to look after the kids for a violent fight with his older defacto.
The 17-year-old lad became tearful when seated in the dock after being refused bail by a Gladstone magistrate.
Prosecutor Sgt Barry Stevens called it "a disturbing assault" on the woman and mother aged in her 20's with police alleging he struck multiple head punches.
Sgt Stevens said police saw marks on her and there had been children in the vicinity at the time.
The teen made no plea to a charged of assault causing bodily harm.
At the time of the alleged offences he was on probation for drug offences.
In opposing bail Sgt Stevens said the teen returned to the house two hours later and had a knife sharpener and wanted to continue assaulting people.
Sgt Stevens said family members told police the teen was a drug user of cannabis and methamphetamine which made him uncontrollable and he was not welcome back at the house.
Duty lawyer Jun Pepito said the teen would soon turn 18 and instructs that "he felt used" in the relationship with the woman. "When she goes away he has to look after her children," Mr Pepito said.
He said the teen denies the allegation, instead claiming that the woman put him in a headlock and he tried to get away from her.
Magistrate Penelope Hay said although he was young the teen was becoming a recidivist offender although not for violence.
Ms Hay said allegations were that he punched the woman in the face and head although he disputed this.
The magistrate questioned whether this would be considered a reasonable response by him to being put in a headlock as claimed.
"It is difficult to see that repeatedly punching in the head (is a reasonable response)," she said.
Ms Hay voiced concern the teen could intimidate witnesses, saying police allege he returned to the house with a knife sharpener two hours after the first incident and threatened a man.
She refused bail, saying she was not satisfied that she could craft bail conditions that would overcome the concerns of any witnesses.
The case was adjourned to a date in February.