The five were dropped from a plank into a pit of pink goo while playing 'Truth or Fools', a guessing game shedding light on the lives of the celebrities both inside and outside the house.
Tricia Penrose screams after getting gunged
For the challenge, Heidi Montag and Paula Hamilton were asked multiple choice questions about each of the other housemates in the Diary Room.
For every question they answered correctly, the group would win an extra 'PASS' ball for the Randomizer machine that will ultimately decide their shopping budget at the end of the overall 'Against All Odds' task.
However, for every incorrect answer, the housemate they were quizzed about would take a dive into something nasty.
Neil Ruddock wipes off his gunge-covered goggles
While Pratt and Hamilton answered six questions about their co-stars correctly, they were unable to guess that Banghard wanted to bring out her own range of condoms or which boyband Penrose's husband was a member of.
Taylforth faced added embarrassment as her question concerned her infamous 1994 libel case, where she unsuccessfully sued The Sun over a story about her giving oral sex to a former partner on an A1 slip road.
Ryan Moloney rises from the gunge
"Why did I not know that was [coming]," she scoffed.
Earlier in the 'Against All Odds' task, Rylan Clark vomited after being challenged to eat chilli-infused chocolates.
The first day of the task yesterday (January 7), which will feature on tonight's Channel 5 highlights show, saw Claire Richards tortured with Steps music, and Heidi burst into tears over the prospect of husband Spencer Pratt locking lips with Banghard.