The Project's Kate Langbroek leaves her fellow panellists in hysterics as she makes X-rated joke: 'Funniest thing in ten years'

The Project star Kate Langbroek had her fellow panellists in stitches on Tuesday night after dropping a very X-rated joke live on air.

The veteran TV and radio star, 59, did not hold back when commenting on a news segment about constipation.

 'A British doctor claims to have the answer for constipation,' host Sarah Harris explained.

'He says making an elongated "moo" that sounds like a horny cow can help, and if mooing in the office toilet isn't an option, you can always pretend to blow bubbles.'

Kate was immediately confused by the UK medical expert's unusual assertion.

'I notice he's not saying drink more water or eat more fibre, like his go to is mooing like a horny cow, whatever that is.'

Panellist Sam Taunton was also confused by the constipation cure, arguing that it might not be appropriate in a workplace setting.

'I just don't understand,' he said. 'So you're going to be at work in the office cubicle making a horny cow noise?'

However, Kate seemed more interested in the doctor's suggestion of blowing bubbles than acting like a horny cow.

'That's just as weird,' Sam replied. 'Imagine sitting next to someone and just hearing: 'blub, blub blub.'' 

Without missing a beat Kate dropped a decidedly ribald reply that left her co-stars in fits of laughter.

'Also, who is Bubbles?', Kate replied with impeccable comic timing.

Co-hosts Sara, Sam and Hamish Macdonald could barely control themselves following the racy gag.

Sarah Harris appeared the most affected, barely able to speak as she hid her face with her hands while 'cracking up.'

Kate's joke resonated with fans as well with many taking to social media to congratulate the host on her comedy style.

'This was the funniest thing I've seen on @theprojecttv in over 10 years,' one fan commented.

Another jumped in revealing that Kate's gag had ruined their dinner.

'I was eating dinner when I watched this and spat it out in a fit of laughter,' they said.

 A third summed up the sentiment of many, adding; '@katelangbroek is an absolute crack up Need her on more often.'

Elsewhere in the episode, Kate weighed in on US pop behemoth Taylor Swift's relationship with her NFL star boyfriend Travis Kelce.

The panel joked that Swift will have to 'break up with her latest boyfriend' Travis now that her juggernaut Eras tour is over.

'If I was a guy and I went out with Taylor Swift, I would sleep with one eye open!' said host Kate Langbroek before adding,' To see if she's tinkering away at the piano.'

Her co-star, comedian Sam Taunton, was in agreement.

'About time she can break-up with her boyfriend and write a new album, I reckon,' he said.

He added that he felt Swift's romance with Kelce is a 'a sham' to which Kate agreed, adding: 'I always speculate about people in the media.'

Swift ended her mega successful Eras Tour on Sunday night but not without a final tribute to her NFL star boyfriend Kelce.