You must be exactly this height and weight to ride this ride, or else.
Using the keen powers of sadistic evil automatically bestowed upon a person upon booting up RollerCoaster Tycoon 3, Redditor DaHrakl created the ultimate waterslide. And by “ultimate” I mean “final”, as only a very sprecific subset of park visitors would be of the exact height, weight and build to pull this off, and even then the wind conditions would have to be just right.
It doesn’t matter how many lifeguards you stack up in the landing zone, no amount of mouth-to-mouth is going to reanimate the charred and splattered remains of whatever misses that landing.