An 18-year-old girl from Red Lodge attacked a teenage cyclist with a metal bar, a court has heard.
Scarlett Macdonald, of Acorn Way, later gloated over what she had done as she travelled on a bus.
Another passenger saw Macdonald produce the 2ft long bar from her bag and heard her say that she was glad that she had done it.
Macdonald also said: “I bet I get arrested tonight”, which Ipswich Crown Court heard on Thursday was what happened.
The attack was on September 26 last year and had been ‘not entirely motiveless’ said prosecutor Michael Crimp.
Mr Crimp said the victim, who at one time had been a friend of Macdonald’s boyfriend, was cycling in Spring Lane, Bury St Edmunds when he saw two figures ahead of him.
Both the people turned off and went up a set of steps leading to a car park before he turned onto a cycle path and was approached by Macdonald who had ‘stormed towards him shouting abuse’, said Mr Crimp.
Macdonald produced the hollow metal bar from under her top and began to beat him with it.
Mr Crimp said: “It seemed to him that she was aiming for his head, so he reached his hand out to defend himself.”
The victim was struck on the hand resulting in a split finger which required hospital treatment as well as bruising.
Macdonald, who said she had ‘bunked off’ college that day, claimed in a prepared statement handed to police after her arrest that the victim had pushed his bike into her legs and denied assaulting him or having a weapon.
Later Macdonald, who has no previous convictions, pleaded guilty to assault by beating and having an offensive weapon in a public place.
Noel Casey, in mitigation, said: “It was completely out of character.”
A probation service report assessed Macdonald at low risk of reoffending.
Sentencing Macdonald, Mr Recorder Richard Gordon QC told her: “I’m very concerned about this offence. Those closest to you need to pay close attention to how you develop.”
Macdonald received a 12 month community order with requirements to participate in a 30 day required activity programme, pay £500 compensation and £150 prosecution costs.