This series of Big Brother has been hard to follow at the best of times, but as the latest Time Bomb went off it was madder than ever.

This was no normal eviction night – first of all the housemates who thought they were nominated were actually safe, while those who thought they were safe were up for eviction.

But that wasn’t all – they had no idea that not one, but FOUR housemates would be leaving – and being replaced by four brand new ones.

It’s a new tactic from Big Brother – if every evicted housemate is replaced by a new one, the show will never end. It’s evil genius…

Let’s start at the beginning. It was eviction night – so far so standard.

Except this was no normal eviction. It was a reverse eviction. SAY WHAT??

Yes, the poor, unsuspecting Amy & Sally, Chloe, Danny, Harriet, Kieran and Sarah thought they were safe – but in fact it was they, and not their worried housemates, who were up for eviction.

The housemates gathered on the sofa to hear their fate – and it’s fair to say they were not impressed.

Poor things – they didn’t even know about the whole ‘four in, four out’ thing yet…

So who was the first one to leave?

Yes, the first one to leave was actually two. The twins were out of there.

We’ll miss Amy, but we were never that keen on Sally. Or was it the other way around?

Okay, this is when it got really weird. Because the remaining housemates still up for eviction – that’s Chloe, Danny, Harriet, Kieran and Sarah for anyone who’s keeping count – were herded out into the garden and told to sit down.

They were then presented with an enormous revolving door, and told to go in one by one.

Harriet was first – she sat down, the door kept revolving and she was told not to get up until it stopped.

Yep, she went in as Harriet and emerged as Harry Amelia Martin, a 22-year-old model and dominatrix – possibly the most archetypal Big Brother contestant ever.

Next up was Danny – but when the door finished revolving, he was still there.

But Kieran wasn’t so lucky.

Yep, it was bye bye to Kieran and hello to Marc O’Neill, a 29-year-old student and stripper from Kildare. Okay, maybe HE was the most archetypal BB contestant ever.

Sorry Tamara.

Meanwhile, viewers were a bit bewildered.

There was a moment to catch our breath as Harriet gave the sweariest exit interview EVER.

Whatever happened to “you are live on Channel 4, please do not swear”? Oh yeah, it’s not on Channel 4 any more.

Suddenly the people who’d failed to keep Kieran in the house decided they really liked him.

But anyway – back to the slaughter.

Big Brother had clearly tired of the revolving door motif, because for eviction number three of the night, it fell to Sam – the third new housemate – to deliver the news.

See ya Sarah.

And what about Sam, the 27-year-old personal trainer?

Wow, that was unexpected – the viewers actually liked one of the new housemates.

But there was one more twist to come – another new housemate, or rather an old housemate. Simon Gross, the 46-year-old theatre company owner who likes shouting “showbiz!” and was evicted back on the very first night of this series, was back.

And what was the first thing he did? He shouted “showbiz!” really loud, of course.

Welcome back, Simon.

So as the dust settled, what did people think of the most explosive night of Big Brother action anyone can remember?

Ah well. It made for an entertaining(ish) couple of hours.