The 68-year-old US model and Diversity dancer Jordan Banjo had viewers gagging along with them at their retching noises as they attempted to eat crocodile anus, goat lung, ostrich testicle and lamb testicle in a bid to win meals for camp.
Dickinson called hosts Ant McPartlin and Declan Donnelly "a**eholes" and gestured the middle finger at them as they introduced dishes with names such as 'c**k au vag' and 'spaghetti b*****k-nese'.
Viewers were turned off, not by the gruesome gourmet offerings, but by the celebrities' attempts to eat them.
One tweeted: "Jordan Banjo projectile vomiting has killed me off. #ImACeleb"
Another said: "Watching Janice spit into her hand and eat it again was somehow the worst bit so far #ImACeleb"
One viewer said: "I’ve had to turn over , cannot cope with the noises Jordan’s making #ImACeleb"
Contestant Carol Vorderman chatted to her fans live on Instagram after the episode aired and admitted she also felt nauseous watching.
She confessed: "The eating trial made me feel sick!...
"I have actually been a bit sick today, but seeing Jordan started to make me go a bit..."
She added she was not allowed to talk about anything that happens in the upcoming episodes of the pre-recorded show.
But Vorderman revealed: "You are going to see some trials which are horrid, quite awful and pretty spectacular."
Also returning are Coronation Street star Helen Flanagan, Olympic athlete Fatima Whitbread, retired cricketer Phil Tufnell, dietician Gillian McKeith and boxer Amir Khan.
At the end of the latest episode it was revealed Hear'Say singer Myleene Klass, Made In Chelsea's Georgia 'Toff' Toffolo and Corrie's Andy Whyment are set to enter the camp – and the celebrities were asked to choose who would join them first.
Read more: All the I'm A Celebrity winners so far
Toffolo won the show in 2017, and the only other returning winner is Tufnell, who was crowned King Of The Jungle in the second series of the show in 2003.
I'm A Celebrity... South Africa continues on ITV at 9pm.
Watch: Jordan Banjo shares funny video after vasectomy operation