Well, it's a pile of something that has steam rising from it. We could give you a better answer if you gave us some context, Crimson.
Loob's being ladylike and Crimson-Sky is being shy. In many situations the "steaming pile" alluded to is a steaming pile of bullshit, horseshit or just shit. The shit being alluded to is, in turn, metaphorical. It generally means trouble, difficulty, problems, unpleasant situations, ... ... Now that I've broken the ice, perhaps Crimson-Sky will post the sentence and context? (See forum rule #9 - Discussion of offensive words and phrases is permitted, but the conversation must remain respectful and serious.)
Crimson, please answer our questions! We can only help if you give us some context. Where did you find the expression "steaming pile of something"?
Thank you. I think my summary earlier may apply. My life is full of trouble, difficulty, problems, unpleasant situations...
Me too. If the author of that had only said My life is a steaming pile, I'm fairly sure that most native English-speakers would have easily been able to supply the missing [of shit], Crimson ~ even if they would never have said it themselves
