A woman followed her boyfriend behind bars on Thursday after staging an attack in Nottingham Prison which shocked three officers.
Nottingham Magistrates' Court heard that Chelsea Vardy punched, kicked and spat after leaving her mobile phone in the jail and being told she would have to return the next day to collect it.
JP Janet Kitson told her: "These were very nasty degrading offences. They are so serious that immediate custody is the only proper sentence."
An 18-week term was imposed on Vardy, 23, who admitted two counts of assaulting officers in the execution of their duty, one common assault and causing damage to a police vehicle, which needed a £70 clean to remove her spittle. The court was told that trouble began after Vardy visited her partner in the prison on March 29.
When told she could not return to collect her phone, Vardy picked up a brick in the car park and said: "I will smash my way in."
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She punched a policeman on the chin, as he tried to grab the brick, said Judith Kirkham, prosecuting. As a crowd began to gather, a female prison officer tried to help and was "punched hard in the face."
The officer, who was pregnant, had to go to hospital for a check-up but there was more bother when a police car arrived to remove Vardy. She spat and "lashed out and kicked the first officer in the head".
When a police van turned up, Vardy, of Rhodes Avenue, Newbold, near Chesterfield, spat at a woman officer. The spittle landed on her mouth, nose and on one cheek, said Mrs Kirkham. "She was disgusted and could hear her hacking to accumulate spit to spit all over the vehicle.
"She said she had been assaulted before but never anything like this. She was shocked by the violence and felt it was deplorable. Another officer said he had never seen worse violence in 11 years' experience," said Mrs Kirkham.
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Vardy, who was on a suspended sentence, must pay a government surcharge of £80.
Zahra Hussain, in mitigation, said Vardy suffered from anxiety and depression as well as a spinal problem. "Her behaviour, she accepts, was wrong,'' she said.
"Without the assistance of probation and the thinking skills course, this behaviour will continue. She has never been to prison and when I told her that was a possibility, she said in her own words 'I would not be able to cope with prison. I would not be able to get help from my probation officer, my mum and my sister.'"
"She told me 'I am sorry, I know what I did was wrong. I am disgusted I spat on people,'" added Miss Hussain for Vardy, of Rhodes Avenue, Newbold, near Chesterfield.