Celebrity Big Brother took on a new low last night when health guru Gillian McKeith entered the house. 

The 56-year-old asked the housemates to give her a stool sample to test what their diets are like, and when they all argued (obvs), she told them she put laxatives in their knickers. WHAT?

"Don't worry, it's not touching anything," she said.

The whole ordeal led to a rather disgusting talk among the housemates… and we're so grossed out.

"Mine is like slop, said Stephanie, while Jeremy told Gillian he was worried about the smell. 

The task comes after the You Are What You Eat star revealed that she would be cleaning the housemates' minds, bodies and souls and named the four most "toxic" celebs.  

Stephanie Davis (no shock there), Scotty T, John Partridge and Tiffany Pollard were named as the worst influences in the house – giving Gemma Collins a free pass because she was sick.