Here's a breakdown of the meaning:
* "Whose ox is being gored" refers to who is being harmed or affected by a situation.
* "It all depends" suggests that the perspective on the situation varies depending on who is being impacted.
Example:
Let's say a town is considering a new law that would limit the hours of operation for bars.
* Someone who owns a bar might oppose the law, arguing that it's unfair and will hurt businesses. Their "ox" is being gored because the law directly impacts their livelihood.
* Someone who lives near a bar might support the law, arguing that it will reduce noise and disturbance in their neighborhood. Their "ox" isn't being gored because the law doesn't directly affect them.
In essence, the idiom highlights how self-interest can bias our opinions and actions. People are more likely to support policies or actions that benefit them and oppose those that harm them, even if those policies or actions are objectively good or bad.