LONDON -- As a kid,Watch Selina's Gold Online did you ever fantasize about what it would be like if the entire world was a trampoline?

Well, visitors to Sutton Park in St. Helens, Merseyside, UK got a glimpse of what that might look like, and it's bizarre.

A section of wobbly grass in the park took on a trampoline-like effect after recent heavy rain caused the ground to swell. 

Lauren Roberts captured video of the waterlogged earth rippling beneath the feet of a man and dog, and posted the strange sight to Facebook where it has since been shared almost 1,500 times.

50-year-old Roberts is quoted by SWNS TV as saying, "I just couldn't believe it at first, it just looks like a giant water bed, doesn't it?"

Despite the obvious appeal of the bouncy grass, people have been warned not to approach the soggy ground as there may be a sink hole beneath the surface that could drop under the excessive weight of the water. 

Mashablehas reached out to the Environment Agency for confirmation as to the cause of the unsteady earth, who have yet to respond officially. However, from speaking to various experts off the record, it appears to be the result of water under the soil -- similar to a quaking bog when vegetation grows over open water.

Maybe that fantasy trampoline world wouldn't be so great after all... Still open to swimming pools filled with jello, though.