There are currently 3 questions in idioms tag. Typically, they are formulated like this:
Someone said, "up to you". Does it mean that I'm located higher (
up) than the speaker?
And typical answer is:
Here, the entire phrase is an idiomatic expression whose meaning can't be composed by summing the meanings of its parts.
Should such questions be on-topic?
My take is no, simply because:
- It indicates no own research effort: googling the phrase will give the corresponding article on Wiktionary or Wikiquote as the first result;
- The entire site can be flooded with lots of similar questions that are essentially duplicates;
There may be exceptions when it's hard to google, likewise when two idiomatic expressions are adjacent in the same sentence, and it's hard to distinguish what's where.