Callum Ryan, 21, was left coughing up blood for thirty minutes before getting himself checked out at hospital, where an X-ray revealed the extent of his injuries.
The Buckinghamshire lad had been lapping up the warm weather with his girlfriend at an inflatable assault course in the Grand Canyon water park when the incident occurred.
Callum explained: “There was a big bouncy cushion at the waterpark that you jump on to and I thought: 'Let's give it a go'."
Watch Callum's backflip below:
"My girlfriend, Beth, went first – there was a five-metre drop to jump on the cushion – she did a backflip into the water from the cushion which propelled her into the air.
"I thought I'd do a backflip and I got the two biggest lads to jump on the cushion at the same time.
"They said they have never seen someone hit the height that I did – I landed in a dodgy way, flat on my back. As soon as I landed in the water, I knew I'd done something wrong.
"I swam up underwater and the second I hit the air, I had a handful of blood. Straight away within two or three seconds, I coughed up a handful of blood and that went on for thirty minutes."
After the jump, Callum and his girlfriend, 19-year-old Beth Colley, travelled from the water park in Chiang Mai to Pye on a three-and-a-half-hour coach journey.
But when they arrived, Callum was feeling so unwell he went to the nearest hospital – but claims it was closed and he was told to head back in the morning.
The next day, he was given an X-ray and told he'd dislocated his ribs and damaged his lungs.
Callum explained: "I felt really sick and ill, when I got there I wasn't feeling good.
"I went to the hospital and they said: 'Sorry, we are closed, you will have to come back in the morning.'
"I went back in the morning, they gave me an X-ray and they said how I dislocated my ribs and damaged my lungs."
Callum was told he would have to go to another hospital back in Chiang Mai as they couldn't treat him in Pye.
Eventually, Callum received another X-ray back in Chiang Mai to check if there was any internal damage and was prescribed some pain killers and sent on his way.
LADbible has reached out to Grand Canyon water park for comment.
Featured Image Credit: SWNS
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