Is this a slang word and what does it mean? 摊牌

Question

I'm wondering if 摊牌 is a slang word, as when I translate it, I get the word "showdown". It doesn't make much sense to me when I try to translate within a sentence. So what I think this word means is to "come clean" based on what I have found online, but I want to make sure.

Here is an example:

您这是不装了…… 真摊牌了是吧？！

My translation:

Your not pretending... are you finally coming clean?

Another example:

这种摊牌方式…… 一看就是个恶魔！

My translation:

This confession method... a demon at first glance.

I don't really know if that is correct or if I'm mistaken.

Thanks for the help.

Answer 1

摊牌 - (as in a poker game), show what (card) you have; reveal something that one thinks is advantageous/beneficial (winning cards) to one's position/situation in a negotiation/confrontation.

Answer 2

Above answers are correct, 摊牌 is indeed a slang in poker games. However, as in daily life, it means someone is not pretending no more, it's like letting everyone know what cards you have in ur hands.