Two humans ascended a certain geological protuberance to collect a hydride of oxygen whose quantity isn't specified...
One member descends dramatically suffering mechanical damage to the cranial part of his anatomical cranium!
The second member follows the first in a similar series of rapid irregular disturbing movements...
Here In simple English...
"Jack & Jill went up the hill to fetch a pail of water, Jack fell down and broke his crown and Jill came tumbling after"