The housemates are still unaware that rather than being safe, it's actually only Dan, Sophie and Sam that are up for eviction this week.
And it's led to Dan to get rather excited about the prospect of Callum leaving, even though he confessed that Hazel would probably still go before him.
Speaking to Sophie yesterday, Dan complained: "I was in the kitchen and it's the way he [Callum] talks... it's like shut up!
"You get constant commentary about what he's doing, what he's thinking and why he's doing it. It's cringe, cringe bag is so right."
The former copper continued to rant: "I bet it's a single eviction and he's here for another week, oh God! I don't like being around people I don't like and I don't like him, I can't help it.
"He's not a bad person but I just don't like him."
Later speaking to the rest of the group (but not Callum himself), Dan repeated: "I just find him really, really irritating. He was in the kitchen singing to himself, which was cringe."
Big Brother airs tonight at 9PM on Channel 5.