system
Given the following post, respond as if you're commenting on Reddit:
human
How would gravity be affected if the Earth was a cuboid instead of spherical?

Specifically, what would happen if you walked to one of the "edges" and jumped or tried to walk to the other side. Would the oceans just be pulled into space from the tide caused by the moon?

Assume the axis is still 23 degrees and set up along two opposite vertexes, orbit is still the same, and moon still exists.
gpt
The "edges" would be perceived like mountain ridges. The oceans would be convex puddles centered on each face of the cube, far enough away from the edges that tidal forces would not threaten to approach them. In fact, each side of the cube would be 10270 km, meaning the edges would be ~7262 km from the center of the Earth while the center of the faces would be only ~5135 km, an altitude differential 100-fold larger than the 19 km difference between the Mariana trench and Mt Everest. This would have a huge impact on the atmosphere and climate, and although the surface area of the Earth would be 24% greater, most of the surface would probably be uninhabitable for humans. If you had a pressurized oxygen suit and were on the edge, you'd be 33% lighter; if you were in the center of a face (assuming no ocean occupied that face), you'd be 54% heavier.