Pour water from a high altitude on the ground, and the water will bounce off the ground to the toile

Probability-wise, it is possible. Because the direction of the water bounce depends on the angle of the bounce surface, many surfaces that appear flat to the naked eye are actually uneven, so the water droplets that bounce up can bounce in either direction, including back to the original place.

However, in terms of probability, the probability of such a bounce back is extremely small. On the one hand, the rebound strength will gradually be consumed, it will become smaller and smaller, and most of the water droplets will not even have the strength to rebound, on the other hand, because the water droplets may rebound in any direction, so the water droplets that bounce back are only a very small part of them.

Needless to prove, the water flows lower due to gravity.

Did you see the raindrops bounce back when it rained?