Bristol Palin LAUGHS as son, 4, hurls F-word at aunt Willow

'I’m doing a terrible job disciplining Tripp': Bristol Palin LAUGHS as son, 4, hurls F-word at aunt Willow

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UPDATED:

19:36 GMT, 23 July 2012

Viewers were left shocked when sisters Bristol Palin burst out with laughter when her four-year-old son used the F-word during filming of her reality series, Life's A Tripp.

The daughter of American politician Sarah Palin couldn't stop giggling after the little boy swore at his aunt Willow during a temper tantrum.

It was initially thought that the child said the word 'f*****', an offensive term commonly used against homosexuals, but a show spokesperson, who has seen the unedited footage, told Mail Online it was in fact the four-letter word.

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Swear word: Bristol Palin's son Tripp used the F-word at his aunt Willow a f***** after he was told he couldn't swimming

Swear word: Bristol Palin's son Tripp used the F-word at his aunt Willow a f***** after he was told he couldn't swimming

Strange reaction: Bristol and her sister Willow, left, burst into laughter after hearing the word

Strange reaction: Bristol and her sister Willow, left, burst into laughter after hearing the word

Having just checked into a hotel, her young son runs into the room excitedly and sees a swimming pool from his bedroom window.

The excited child then tells his mother that he wants to go down to the pool straightaway.

Bristol, 21, explains to him that it is bedtime and he should be tired after his long flight but Tripp won't take no for an answer.

Bad boy: Tripp had a temper tantrum because he was told he could not use the swimming pool at the hotel

Bad boy: Tripp had a temper tantrum because he was told he could not use the swimming pool at the hotel

Naughty thoughts: Tripp had been told that he was in trouble for first of all telling his mother that he hated her

Naughty thoughts: Tripp had been told that he was in trouble for first of all telling his mother that he hated her

As his mother looks out at the swimming pool she tells her son that she doesn't like the look of the 'drunk teenagers' hanging around the area.

Her sister Willow gives some back up and tells Tripp to calm down or he will be punished as he begins to lose his temper.

An angry Tripp then jumps on his mother's lap and tells her that he hates her before Willow picks him and threatens to send him to his room.

Undeterred, he then smiles before shouting at his aunt: 'You f***'.

Unruly: Tripp was told he wasn't cute but neither Willow or Bristol actually appeared to discipline the child

Unruly: Tripp was told he wasn't cute but neither Willow or Bristol actually appeared to discipline the child

Must try harder: Bristol admitted that she is not doing a good job at keeping her son in check

Must try harder: Bristol admitted that she is not doing a good job at keeping her son in check

Surprisingly, the sisters try and hold back their laughter rather than instantly telling Tripp not use such an abusive word.

Bristol later admits in the programme: 'I’m doing a terrible job disciplining Tripp.'

Bristol's show has earned disappointing ratings, only debuting with an audience of 726,000 viewers.

It also lost it's 10pm EST slot and was replaced by re-runs of Dance Moms.

The source: Tripp wanted to go for a swim in the pool

The source: Tripp wanted to go for a swim in the pool