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Twisted Joanna Dennehy laughed as she was told she will die in jail.

And later it emerged the triple killer joked with police who arrested her: “It could be worse – I could be fat.”

She had just been told that she will spend the rest of her life in jail, but for evil Joanna Dennehy it was all just one big joke.

The unrepentant killer who mercilessly butchered three men and tried to slaughter two others laughed, smiled and swore in the dock as a judge passed sentence on her at the Old Bailey.

Later it was revealed that twisted Dennehy, 31 – only the third British woman to receive a whole-life sentence – had told a psychiatrist she found murder “more-ish”.

And in astonishing video footage of her being booked into a police station just minutes after her arrest she can be heard telling officers: “It could be worse – I could be big, fat, black and ugly.”

The court was told how Dennehy had tried to explain why she had committed such appalling crimes.

She told the psychiatrist: “I killed to see how it felt, to see if I was as cold as I thought I was… then it got more-ish.”

Judge Mr Justice Spencer revealed her chilling words shortly before handing down the whole-life jail term.

He told smirking Dennehy: “Within the space of 10 days you murdered three men in cold blood.

"Although you pleaded guilty you have made it quite clear you have no remorse for those murders.

"Only a matter of days later you attempted to murder two more men – this time openly on the streets.

“You claim to feel remorse for stabbing these two men nearly to death. I have no hesitation in rejecting that suggestion. You are a cruel, calculating, selfish and manipulative serial killer.

“I am quite sure that the reason you killed Kevin Lee in the way you did was to gratify your sadistic lust for blood.”

Before being led away, Dennehy flashed a smile at her partner-in-crime Gary Stretch, 48, who was also jailed for life.

Cristina Lee, the wife of Dennehy’s third victim Kevin, bravely attended the hearing alongside 22 family members, including her and Kevin’s children Dino, 15, and Chiara, 25.

What they did not see in court was the footage of Dennehy being booked in at Hereford police station.

In the shocking video, the grinning killer laughs and jokes, telling officers: “Attempted murder and murder is nothing. It’s like going down for a Sunday roast, easy.”

Dennehy also complains about having endured a “really hectic week”.

She drums her fingers on the desk and flicks back her hair as she flirts with a male officer, laughing and flashing broad smiles to those around her.

At one point Dennehy performs a bizarre “chicken walk” and hunches her shoulders as she is led to the cells, saying: “I’m the Incredible Hulk.”

She tells officers: “Am I suicidal? No. Am I cheery now? Yes. Would you be cheery if you were up for attempted murder and murder?

“No – but I’m still smiling...”

The mum of two appeared to be more concerned with her clothes than the men she left for dead.

When a PC tried to seize her possessions, she complained that she didn’t want a “suicide suit”.

The prison-issue clothes are specially designed so that prisoners cannot use them to self harm.

Dennehy says: “Don’t put me in a suicide suit. I’m good with my own clothes.

"The shorts are massive. The paper suits wrap around me twice – I’m not having it.”

Before being strip-searched Dennehy adds: “So what are you going to give me afterwards? Tracksuit and plimsolls? F****** glamorous that is.”

Later she moans: “Why can’t I have a T-shirt? I do need a T-shirt because this is massive... this is a tent.”

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When a PC tells her the outfit “looks good” she replies: “Thanks for that, that makes me feel so good, real sexy.”

Dennehy was so relaxed she appeared to flirt with the PC in charge of taking down her details.

She tells him: “You’ve got very distinctive eyebrows… really strict. You can’t say that they are not strict eyebrows. Up, down. I love your eyebrows.”

She also tells a WPC “you are so tiny”.

The officer replies: “Oh thank you, I have never been called tiny, thanks.”

Dennehy responds: “You’re welcome – not bad for a murderer.”

When asked for her address Dennehy jokes: “At the moment I have been on the run.”

She also admitted being drunk, saying: “Half a bottle of whisky this morning, expensive stuff, £80 a bottle.”

The killer refused to take out her tongue piercing it had to be removed by a male officer.

She is heard telling him: “You are a decent copper, I’m a crap criminal – you will read about it in the newspapers shortly. You will think, ‘That’s the girl I arrested – I know her’.”

Dennehy’s three accomplices, said to have “fallen under her spell”, were also jailed for their part in her killing spree.

Seven foot 3in Gary Stretch, 48, was jailed for a minimum of 19 years.

Leslie Layton, 36, received 14 years and Robert Moore, 56, of Peterborough, got three years.

Dennehy, flanked by three guards and handcuffed, wore a bright pink tracksuit with a sparkly feather scrunchie to pull her hair back into a ponytail.

The sleeveless vest top exposed her arms – which were heavily criss-crossed in scars.

On several occasions she burst into giggles, particularly when chatting to Stretch, as the pair ignored much of what was said by the judge and lawyers.

The judge described Dennehy’s offences as “appalling” adding that he believed she was “excited” by television reports of the killings. He told the court she was in “a state of euphoria”.

But Dennehy yelled out “B*******!” when the judge stated that Stretch had armed himself with a handgun.

He told her: “The death and destruction for which you are responsible has caused untold distress to the families of the men you murdered and the victims who survived.”

Dennehy, of Peterborough, stunned the same court last November when she admitted the murders of Lukasz Slaboszewski, 31, Kevin Lee, 48, and 56-year-old John Chapman.

She also pleaded guilty to dumping the bodies of her victims and the attempted murder of dog walkers, John Rogers and Robin Bereza in Hereford.

Stretch, of Peterborough, was found guilty of the attempted murders and three counts of preventing the lawful burial of a body.

He yawned as he was sentenced and told the judge: “Thank you very much.”

The criminal psychologist's verdict: A woman who finds killing a turn-on and a disappointment at the same time.