Sugar Bear rips off his shirt in anger as he's cussed out by Pumpkin behind the scenes of Mama June reunion episode

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The tensions between Mama June Shannon and her ex Mike 'Sugar Bear' Thompson exploded backstage during filming of a family reunion.

Sugar Bear and his new bride Jennifer Lamb were taking part in an episode of WEtv's Mama June: From Hot To Not when he and June's daughter Lauryn 'Pumpkin' Shannon got into a shouting match.

The two scream at each other as Pumpkin cusses her stepfather out in a clip exclusive to ET, and he responds by angrily ripping off his shirt.

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Letting rip: Mike 'Sugar Bear' Thompson and Lauryn 'Pumpkin' Shannon got into a screaming match during filming of reunion episode for Mama June: From Hot To Not

Incensed: In the preview clip for Friday's episode on WEtv, Sugar Bear, 45, is seen ripping off his shirt in anger after being cussed out by Pumpkin, 16

As Sugar Bear walks onto the set for a taping, he's yelled at by Pumpkin, 16, who calls him out for being a bad father.

'I got you too! I got you too,' he yells at her, as a crew member attempts to hold the teen back.

Mama June gets up from her seat and enters the fray, yelling at him: 'You touch her, I swear to God, I will f***ing kill you!'

Pumpkin keeps on yelling at Sugar Bear.

'F*** you, you dumb piece of s***,' she screams. 'That's why you're a f***ing piece of s*** father.'

Yelling her mind: 'F*** you, you dumb piece of s***,' Pumpkin screams as she's restrained by a crew member. 'That's why you're a f***ing piece of s*** father'

Joined in: Mama June gets up from her seat and enters the fray, yelling at her ex: 'You touch her, I swear to God, I will f***ing kill you!' as Sugar Bear's new bride Jennifer Lamb watches

Separating them: A crew member then persuades Sugar Bear to leave the set and cool off

Sugar Bear is the father of Alana 'Honey Boo Boo' Thompson, 11, who was in another area of the sound stage when the altercation went down.

Crew members are seen telling Mama June that the youngster is 'way away' from the drama.

The clip was released as the animosity between Mama June and Sugar Bear came to light this week in a series of allegations lobbied by each of the reality stars at the other.

WARNING: EXPLICIT LANGUAGE 

Not so happy family anymore: Pumpkin and Sugar Bear were all smiles as they posed with Mama June and Honey Boo Boo at the Marriage Boot Camp premiere in November 2015

On Tuesday, Sugar Bear, 45, denied claims made by his ex that he was physically and emotionally abusive during their relationship.

The couple split in 2014 and in late January he married Lamb after dating for just over a year.

'The abuse allegations are not true,' he told Entertainment Tonight Tuesday.  'June is saying these things because she's p***ed at me. I never hurt any kid.'

Defending himself: Sugar Bear', pictured in 2013, said this week that claims by Mama June he was abusive during their relationship are 'not true' and she's 'p***ed' about his new marriage

Claims: Mama June alleged that Sugar Bear had caused her daughter Pumpkin's eye injury 'because he got mad' back in 2012, pictured on TLC's Here Comes Honey Boo Boo

On Monday, Page Six published an on-camera interview with Mama June in which the reality star said of her ex: 'It’s time the world sees him for what he is.'

'[Lauryn 'Pumpkin’ Shannon’s] eye buckle was caused by him… because he got mad. So many emotional and physical scars with the kids.'

It seems she was referring to an incident in October 2012 when Pumpkin, then 12, was taken to hospital after suffering an eye injury.

At the time it was claimed Sugar Bear had tossed her a set of car keys he'd expected her to catch and which instead struck her in the face, according to The National Enquirer.

Hitting out: Mama June, 37, pictured with Alana in New York on April 5 while promoting her new show From Hot To Not, also said her daughter has a 'strained' relationship with her father

Counter accusation: I've tried to stay in touch with my daughter but June won't let me,' Sugar Bear, 45, told ET.   'June's a damn liar. I would never hurt Alana in any way.'

The 37-year-old who found fame on TLC"s Here Comes Honey Boo Boo, also alleged that Alana, 11, has a strained relationship with her father.

Sugar Bear, who appeared close to Honey Boo Boo when she was a bridesmaid at his wedding to Jennifer, insists he is not the villain in the piece.

'I have text messages where I text June and try to talk to Alana, but no response back from her,' he told ET.

'The last time I saw Alana was at mine and Jennifer's wedding. I've tried to stay in touch with my daughter but June won't let me,' he said. 'June's a damn liar. I would never hurt Alana in any way.'

Newly weds: In late January, Sugar Bear married Jennifer Lamb after just over a year of dating and Honey Boo Boo was a bridesmaid 

Honey Boo Boo and her family were thrust into the limelight after she appeared on an episode of the beauty pageant show Toddlers And Tiaras in 2009.

Three years later family was handed their own breakout show Here Comes Honey Boo Boo, but this was cancelled in 2014 amid reports that Mama June was romantically involved with a former child sex offender.

Following the cancellation, she and Sugar Bear attempted to patch up their relationship with a stint on Marriage Boot Camp, before going their separate ways.

Mama June recently underwent a dramatic weight loss with a little surgical help and is currently starring in her own reality show From Hot To Not on WEtv.

'So many scars': Mama June accused Sugar Bear of emotional and physical abuse after her estranged daughter Anna moved in with him after leaving her husband of three years