I have seen this term used a lot in many different ways.
「さあ、忘れましょうその未来が」 saa, wasuremashou sono mirai ga — in this sense, I assume it means "come". But I have also seen it used as 「でもさあ」 demo saa — which I would assume means "well you know" or some other expression.
Would like to get some more clarification on this word. I know it is informal to use. But the actual meaning and when it is appropriate to use it would help.