To give you some context, Sophie had earlier shown Kyle and co-host Jackie O how she can fit her entire fist in her mouth, which prompted Jackie to give it a go, only to give up after gagging.
'She's a gagger, which is very unsexy,' Kyle said.
Kyle’s latest unsavoury comments came just days after he came under fire for making sexual remarks about the Queen, as well as calling Doria Ragland "the black mum" during an interview with Meghan Markle's estranged half brother, Thomas Markle Jr.
Moments after introducing Thomas to their KIIS FM viewers and discussing his mother, Kyle wasted no time in making a series of uncouth remarks about the Duchess of Sussex, claiming his relationship with his famous sister must also be a "leg opener".
“You would have said ‘hey have you seen that Meghan Markle? Well she’s my sister. Boing! The legs spring open. It’s amazing,” the radio shock jock said as Thomas laughed.
Before making comments about Thomas offering sexual services to the Queen, Kyle went on to ask whether he'd be sexually interested in Princess Beatrice and Princess Eugenie.
"What about one of those freckly cousins ... Eugenie or whatever its name was. Would you go there?" he said. "You know, the freckly cousins, the red-headed bloody things with the stupid hats. Would you go there?"
Thomas then said he'd "do anything for $100 an hour."
Since the segment aired, many angry listeners took to Twitter to express their disappointment, with one claiming his "disgraceful behaviour" should not be tolerated.
"He has no shame at all. I hope companies rethink whether they want to advertise on that garbage show, Absolutely disgraceful behaviour but it is not surprising, he has form," one Twitter user wrote.
"In my humble opinion, Kyle Sandilands is an absolute racist pig," another controversially commented.
KIIS FM producers have since edited the conversation before sharing the chat online, removing Kyle's comment about Meghan's "black mum".
A representative for the network has also defended his remarks, claiming the interview was "lighthearted" and "inoffensive".