Kings of Pain presenter Adam Thorn was left screaming in agony and throwing up dramatically after freely allowing a poisonous lizard to bite him.
The 32-year-old Australian is a co-host on the History Channel show alongside Rob ‘Caveman’ Alleva – which sees the pair engage in a number of definitely do not try this at home stunts involving wildlife.
Adam and Rob allow themselves to be bitten by a wide range of animals and insects as part of their show – which aims to create a “pain index” so members of the public can brace themselves for certain levels of agony should they even be unfortunate enough to be attacked in the wild.
In their latest episode, Adam volunteers to be bitten by a Mexican beaded lizard – which he said produced a pain equivalent to 26.5 out of 30 on their pain threshold list.
Footage shows Adam screaming in agony after the reptile bites him, and he shouts: "Instant pain! It’s burning. So damn bad."
Describing the pain in more detail, he yelled: "It’s like acid. Acid in my veins, man."
The Mexican beaded lizard is native to Mexico and southern Guatemala and is recognisable due to its dull colouration with black and yellow markings.
The beasts can grow between 57 to 91 cm once fully grown and although they carry venom, scientists are baffled as to exactly why the animals carry a toxic product as they feast mainly on eggs.
They are not known to actively attack people and their venom is traditionally not fatal to humans – although respiratory failure can occur without treatment.
Of the eight known attacks that have happened over the past century, these have mostly occurred when the lizards have been prodded while in captivity.
Kings of Pain aims to create a pain index similar to that of the four point Schmidt sting pain index which was created by American entomologist, Justin O. Schmidt who allowed himself to be stung by a number of insects in order to record the effects and pain levels so as to help insect bite and sting victims.
Adam and Rob have expanded their research to include a huge number of animals, allowing themselves to be bitten and stung by reptiles, snakes, and large insects.
With their pain threshold stretching across 30 increments, the duo hope their research will help treatments and diagnosis.
They measure the effect with three categories; intensity of initial physical pain, the duration of the pain, and the after effects or "damage".
While their point system is derived by marking out of 1-10 for each category and then averaging out the results.
Recording their research with a documentary crew, the lads have so far appeared in 10 episodes of the extreme research program.
And they have travelled to destinations including Mexico, Bolivia and South Africa in order to meet some of the most vicious animals.
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