system
Given the following post, respond as if you're commenting on Reddit:
human
If you filed a box to 100% capacity with water, that had only one opening that made a water right seal with your feet, could you stand on the water without submerging?
gpt
Functionally, this would be exactly like standing on a water balloon.  

The critical piece is that by having things watertight around your feet, water has nowhere to go and water is pretty resistant to compression.