On Tuesday morning, star couldn't help but laugh at her co-star after his unexpected comment.
During the show, the presenters touched on Ed Sheeran's recent admission regarding the upcoming 40th anniversary re-release of Band Aid.
The singer, who appeared on the charity single in 2014, has confessed he would've declined his vocals being used for the track.
With Sir Bob Geldof speaking out about the backlash, Susanna told ITV viewers he hasn't held back when sharing his thoughts on the matter, reports
Good Morning Britain's Richard replied: "He's been very trenchant, we can't repeat them but he's basically said, 'if this is patronising colonial my backside'. Except he didn't say backside, it rhymes with farts."
Clearly taken aback by her co-star's strong words, Susanna burst out laughing and put her head into her hands.
She replied: "I'm not sure we avoided the Ofcom ruling on that one!"
Elsewhere in the show, they discussed Ed Sheeran's opinions on Band Aid, explaining that the singer's understanding of the song and the charity narrative has completely changed over the years.
Susanna continued: "He's shared a message from his friend, the musician Fuse ODG who says, 'Band Aid perpetuates damaging stereotypes'".
During the show, Fuse appeared to debate the topic as Good Morning Britain posed the question of whether or not it was time to scrap Band Aid completely.
Originally, the charity single Do They Know It's Christmas was released in 1984 and featured vocals from the likes of Phil Collins, Boy George, David Bowie and George Michael providing vocals for the track.
It's aim was to raise money for charities working with starving children in Ethiopia. The song has been re-recorded twice since then, once in 2004 and again in 2014.
As this year marks its 40th anniversary, a new version is going to be released, blending the different versions from over the years.
Ed Sheeran, who appeared on the song back in 2014, has taken to social media to share his thoughts on the matter.
He commented: "My approval wasn't sought on this new Band Aid 40 release and had I had the choice I would have respectfully declined the use of my vocals.
"A decade on and my understanding of the narrative associated with this has changed, eloquently explained by @fuseodg. This is just my personal stance, I'm hoping it's a forward-looking one. Love to all x."
Sir Bob Geldof, who organised and co-wrote the track, hasn't held back on sharing his thoughts on the backlash and it's clear he's unimpressed.
He said: "This little pop song has kept hundreds of thousands if not millions of people alive," according to the BBC.
Sir Bob continued: "In fact, just today Band Aid has given hundreds of thousands of pounds to help those running from the mass slaughter in Sudan and enough cash to feed a further 8,000 children in the same affected areas of Ethiopia as 1984."
"Those exhausted women who weren't raped and killed and their panicked children and any male over 10 who survived the massacres and those 8,000 Tigrayan children will sleep safer, warmer and cared for tonight because of that miraculous little record.
"We wish that it were other but it isn't. 'Colonial tropes', my a**e."
Good Morning Britain continues weekdays on ITV from 6am.
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