A man has gone viral on TikTok after building a fully-functional swimming pool in his backyard in just 12 hours using a few wooden palettes and a tarp.

Caleb Harrison, 27, from Middle, Tennessee, decided to try and beat the sweltering summer heat by creating a DIY pool that he and his wife Kayla, 26, could relax in during the hottest months. 

Eager to save money, the DIY enthusiast came up with a plan for a homemade pool that required just $140 worth of materials, as well as other items that he managed to source for free   

In a video filmed by Caleb's wife, Kayla, 26, he can be seen in the first stages of his project, drilling wooden pallets together and then adding a plastic sheet and some blue tarpaulin to the inside.

The video then ends, leaving viewers in suspense as to whether or not Caleb mastered the task at hand.

'Uhh...

do y'all really think this will work I'm sorry but absolutely not,' one person wrote.

'Won't last long at all,' added someone else.

'I think it will work as long as you don't add water,' wrote a third person, who might need a recap on the functions of a pool.

'Water is eight pounds per gallon. Measure and calculate. This structure will absolutely fail,' wrote a fourth person.

However, all were proven wrong as the contraption is still in fantastic condition almost one month later - and easily holds around 3,000 gallons of water.