It's Friday, and Friday means there'll be a Big Brother eviction tonight – but since this has been the Big Brother halfway house week, it only stands to reason that most of the housemates facing eviction will be Big Brother halfway housemates.

Thanks to Big Brother pulling so many twists over the course of the week that our brains literally burst into flames sometime on Wednesday evening, the housemates facing eviction tonight are Kara-Louise, David, Shanessa and – just for the sake of it – Tracey. But who will the Big Brother viewers want to get rid of; a Big Brother housemate they don't really know or a Big Brother housemate they do know but think is a bit of a tosser? Ooh, the excitement – right? Right? Did we mention that it's a double eviction too? Excitement! Right?

Here are the Big Brother betting odds for the eviction of Kara-Louise and Shanessa, with help from Paddy Power…

Kara-Louise – Again, we're not entirely sure of the more nuanced aspects of Kara-Louise's personality because each time she appears on Big Brother we lunge at our TV and wrestle it like an alligator. For Christ's sake – what is up with Kara Louise's face? She looks like a grinning prawn in a Cruella Deville wig. And she talks like she's trying to balance a live goldfish in her mouth all the time. But, let's face the facts here, Kara-Louise is not going to be evicted from the Big Brother house. That's not because she brings a touch of much-needed class to the Big Brother house or because her intelligent, cultured personality has struck a nerve with the arty Channel 4 set. It's because hardly anyone actually knows she exists, and far fewer care. Current Big Brother betting odds – 20/1

Shanessa – Ah, Shanessa – the living embodiment of every screeching low-rent pikey hen night you've ever had the horror of witnessing. Although she probably reminds you of that woman who works in Poundstretcher, Shanessa is actually a stripper and – she's possibly insinuated – a former prostitute. And we're guessing that all of Shanessa's friends and family are dead too, because surely nobody would go on Big Brother only to bark "Do you like girls who swallow? I love swallowing" through a door as an introduction, order a terrified boy to display his penis to her and then do the world's most nauseating naked lapdance if she realised that people she knew could actually see her. Shanessa is the obvious choice for Big Brother eviction tonight through nothing but sheer jet-propelled awfulness, but a sliver of us wants Shanessa to stay in the Big Brother house in the hope that she'll out-Kinga Kinga. True, Kinga put a wine bottle into her vagina on TV a couple of years ago but give Shanessa a couple of weeks and some Bacardi Breezer and we reckon she'll try to cram the entire Big Brother diary room up her minge. Current Big Brother betting odds – 5/1

Next week: Big Brother betting odds to win for everybody. Everybody, you hear? But if that's too long to wait – or you feel like making more money than you know what to do with – head right over to the Paddy Power Big Brother betting odds page to see the latest, and best, betting odds… and get a free £10 bet as well!