She's toxic! Britney Spears does Jackass-style stunt in a chemical toilet   before performing live on Jimmy Kimmell

By Jody Thompson
Updated:

Britney Spears proved she'll do pretty much anything to promote her comeback tour and album when she staged a stunt on U.S. TV last night  in a Portaloo.

In a skit mocked up with Jackass star Johnny Knoxville, the Toxic singer was shot into the sky in a chemical toilet in a sketch for Jimmy Kimmel Live.

The game-for-a-laugh singer was seen getting into the blue cube and holding on for life, before it seems to be propelled into the air on bungee ropes as the liquid contents of the lav splashed around her.

Scroll down to watch the stunt...

Ooops! Britney Spears got covered in the contents of a chemical toilet in a Jackass sketch on the Jimmy Kimmell show last night

Ooops! Britney Spears got covered in the contents of a chemical toilet in a Jackass sketch on the Jimmy Kimmell show last night

White van man: Johnny produced Britney out of the back of a van ready for her challenge which she wore goggles for

White van man: Johnny produced Britney out of the back of a van ready for her challenge which she wore goggles for

Toilet humour: The singer was seen being put up for the Portaloo bungee stunt by Jackass mainman Johnny Knoxville

Toilet humour: The singer was seen being put up for the Portaloo bungee stunt by Jackass mainman Johnny Knoxville

The star was then seen extricating herself from the plastic privy, her white vest top now soaked blue, and chasing after the Jackass crew, before punching Knoxville in the crotch.

The sketch - called the 'Poo Cocktail Supreme' starts with Knoxville quizzing Britney if there's anything she's scared off as she prepares to relaunch her career.

Knoxville asks: 'Are you scared of heights? Are you scared of poo-poo? What about pee-pee?'

Un-Lucky: The singer was then seen being locked into the chemical toilet, beloved of festival goers the world over

Un-Lucky: The singer was then seen being locked into the chemical toilet, beloved of festival goers the world over

Silly stunt: The Jimmy Kimmell skit then supposedly showed the singer locked into the contraption which was attached by ropes to two huge cranes

Silly stunt: The Jimmy Kimmell skit then supposedly showed the singer locked into the contraption which was attached by ropes to two huge cranes

To which Britney shakes her head in the negative and asserts: 'No, I'm not scared of poo-poo or pee-pee.'

Dressed in a white vest and leggings, she is then given a pair of goggles and is shut in the cubicle, saying: 'This is Britney Spears, and this is the Poo Cocktail Supreme.'

Johnny then says: 'I hope you're not claustrophobic,' as Spears is seen sitting on the seat, exclaiming: 'Oh my God!'

Sky high: The Portaloo was then propelled metres into the air on two bungee ropes as the singer was seen inside getting covered in the checial contents

Sky high: The Portaloo was then propelled metres into the air on two bungee ropes as the singer was seen inside getting covered in the checial contents

Poo-per star: The contents of the chemical toilet was then seen exploding out of it, supposedly with the singer inside

Poo-per star: The contents of the chemical toilet was then seen exploding out of it, supposedly with the singer inside

Strong-er smell: Britney was seen supposedly getting totally soaked by the contents of the toilet as it bounced up and down on the ropes

Strong-er smell: Britney was seen supposedly getting totally soaked by the contents of the toilet as it bounced up and down on the ropes

In another sketch, Jimmy Kimmell calls at Britney's dressing room on his show to reveal that he's had her name tattooed her name on his calves for a bet with her - to only to find out Spears had only written his name on her wrist in pen.

She shushes him and pushes him out - and outside Knoxville punches him in the crotch.

At the end of the show, the star performed tracks including Hold It Against Me, Til The World Ends and Big Fat Bass at an openair gig outside the Jimmy Kimmell studios in Hollywood that was filmed for the show.

Game for a laugh: The star appeared in another sketch on the show featuring host Jimmy Kimmell himself
Game for a laugh: The star appeared in another sketch on the show featuring host Jimmy Kimmell himself

Game for a laugh: The star appeared in another sketch on the show featuring host Jimmy Kimmell himself 

Tat's all folks: The pair had supposedly pledged to get each other's names tattooed onto themselves

Tat's all folks: The pair had supposedly pledged to get each other's names tattooed onto themselves

Ink-credible: The scene saw Jimmy showing off Britney's name inscribed on his calves - whereas she'd just written his name on her wrist in pen
Ink-credible: The scene saw Jimmy showing off Britney's name inscribed on his calves - whereas she'd just written his name on her wrist in pen

Ink-credible: The scene saw Jimmy showing off Britney's name inscribed on his calves - whereas she'd just written his name on her wrist in pen next to a lipstick mark

However, it did appear - not for the first time - that the star was miming throughout.

Meanwhile Enrique Iglesias has pulled out of supporting Britney on her forthcoming Femme Fatale tour.

No reason was given for the singer's abrupt change of heart, which came shortly after Britney had announced live that he'd be playing on Good Morning America, just after her performance at San Francisco on Sunday had been broadcast on the show.

Good Morning America broadcast three tracks from the comeback gig, where the star performed before 5,000 fans.

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