An inmate attacked two Nottingham Prison officers and then refused to hand over his shirt because it had "screw blood" on it.
Aaron Ruddin, 24, defied them when they wanted to check for weapons. He had punched one guard and kicked another who tried to rescue his colleague.
Details were given at Nottingham Crown Court where Ruddin was jailed for 20 months. This will start when he has completed an eight-year sentence for violence.
The incident took place at 3.30pm on May 31 last year. Ruddin admitted two counts of assault causing actual bodily harm.
Mark Watson, prosecuting, said Ruddin had been given a painting job in an effort to improve his behaviour. He asked an officer to open a cell so he could paint it but was told this had not been cleared.
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Ruddin demanded: "Just open the cell. You have only been in the job for four weeks. You don't know what you are doing."
He punched the officer's face and did the same when another guard arrived to defuse the trouble, but then began to kick out.
"He kicked him several times to the head before he was finally subdued. The defendant was taken away and asked to remove his clothing for weapons.
"He said it had 'screw blood' on it and he was keeping it," Mr Watson told the court. Both officers were taken to hospital. One was off work for a month and the other for 11 days.
Since starting the eight-year term, there had been 120 reports of Ruddin fighting, said Judge John Burgess.
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He told Ruddin: "You must understand prison officers have a difficult enough job without people like you losing their temper and assaulting them.
"Prisoners need to know that the consequence of assaulting prison officers is serious. They are public servants."
The court heard he had been given therapy to help him recover from earlier problems. But Annette Thomas, mitigating, said these sessions had stopped since he had been moved to Frankland Prison.
"He has been told he is not acceptable, not suitable. He appears to be struggling with that.
"That is the reason he was transferred to Frankland to get that treatment but it doesn't seem to be forthcoming.
"He is trying to show willing that he wants to change and wants to engage," added Miss Thomas.
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