What does the idiom wore a poker face mean?

Poker face what does it mean to have a poker face
➡️【Mk.com】✅कैसीनो और प्रमोशन✅·मिस्टिक प्रमोशन®·मिस्टिक गेमिंग·बिंगो·ब्लैकजैक·इलेक्ट्रॉनिक टेबल गेम्स। रोमांचक इंटरैक्टिव टेबल गेम आज़माएं, ✅  A blank expression, also known as a poker face, is a facial expression characterized by neutral positioning of the facial features, implying a lack of what to do win lottery I coach many people who get feedback that they need to develop a “poker face” They get comments such as, “Stop wearing your emotions on

what can disqualify you from winning the lottery What allows us to pull this off? Funny you should ask A group of researchers from Belgium and Germany recently studied the anatomy of the poker