If something was on the “far side of the universe”. Would someone be referring to something still in the same universe but just VERY FAR from our solar system or would they be referring to being from a completely different universe

If someone mentions something on the "far side of the universe," they are most likely referring to a location or object that is extremely distant from our solar system within the same universe. The phrase signifies a great distance from our perspective, as the universe is vast and continuously expanding. There is currently no scientific evidence or consensus on the existence of multiple universes, so when talking about the far side of the universe, it generally pertains to the vastness of our own universe.

What about if it were said in a fictional universe similar to ours?

In a fictional universe similar to ours, the interpretation of "far side of the universe" could vary depending on the context and rules established within that fictional setting. If the fictional universe incorporates the concept of multiple universes or dimensions, then it could indeed be referring to a completely different universe. Alternatively, if the fictional universe operates on similar principles as our own universe, then it would likely be referring to an extremely distant location within the same universe. Ultimately, the meaning would depend on the specific details and rules outlined in the fictional universe in question.