The pair join the likes of Kerry Katona and Megan Barton-Hanson on Channel 4 programme The Big Celebrity Detox.
TV presenter Martin, 59, has previously spoken about his experience on the programme, confessing that at one point he ‘drank his own urine’ and even ‘s**t himself’.
As if things couldn’t get any wilder, on Tuesday’s episode, Martin laid down on a massage table and bared all to Toby.
The spanking therapy turned out to be something he had never imagined.
Ahead of undertaking the task, Martin told the camera: ‘The situation is totally ridiculous.
‘I’m about to have my bottom whacked by Toby.’
He added: ‘My life has never prepared me for this moment.
‘I’ve never been spanked nor have I spanked anyone else.’
However, as the property expert pulled down his trousers and exposed his bottom to the rest of the group, he couldn’t stop laughing.
After Toby delivered the spanks to a giggling Martin, he said: ‘He’s creasing!’
The Love Island star added: ‘Martin really enjoyed it, a bit too much!
‘I think he’s discovered a kink or something.’
This comes after Martin, who finished sixth on I’m A Celebrity in 2016, spoke about the other things he had to try during the detox.
Martin admitted: ‘I think [the producers] did this as a shock factor to get people to watch the series – we had to drink our own urine.’
Speaking to The Sun, he continued: ‘They threw us into the deep end with the worst therapy they could have possibly thought of.’
Worst of all the therapy, however, were what Martin describes as ‘vomit beans’, which are designed specifically to cause extreme vomiting and diarrhoea.
Martin explained: ‘You eat these beans, sit around in a circle and chant over a fire and then these weird people in white smocks give you these beans.’
It turns out, once the beans are ingested, there’s no turning back: ‘They’re fried and are guaranteed to make you throw up and s*** yourself.’
Who knows what the celebs will undertake over the rest of the series?!
The Big Celebrity Detox continues on Wednesday at 9pm on E4.
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