“To go” in the meaning of “to poop”

Here is a quote from article:

The largest animals ever to have lived on Earth, blue whales are colossal in every respect — including, it must be said, the scatological. When a blue whale goes, it goes big.

I’m not native speaker, but it is pretty clear to me what does it mean “when it goes, it goes big”. But it is clear for me only because of the context in which I’ve encountered this phrase.

My question is: As for native speaker, is this very phrase clear without any context provided?

Solution 1:

No, it's entirely context dependent. With no context at all, if I heard someone say, "I need to go", I would assume that they meant that they were going to leave the room or building. However, if they had a certain expression on their face, it would be clear that they were using a polite circumlocution. That said, once you've introduced bodily elimination into the conversation, any references to "going" are going to be contextualized by that, even if you don't really want them to be.

Solution 2:

Without the preceding hint "scatological", I wouldn't interpret "goes" in this sentence that way.

However, "go" is commonly used informally to indicate pooping, especially in the phrase "I need to go [.. to the bathroom]."