My father (important because it explains why I don't know full hand details) played a 2-5 cash NLH game recently, and the following occurred. I'm curious how you all think the floor should have ruled.
Essentially, villain was first to act and had check/called a draw-heavy board on flop and turn. On the river (brick), the villain stated, "I'm going to show you my hand," and he literally flipped over both cards and stared my father down while he did so. He was clearly trying to prevent a big river bluff and get a read on my father.
My father called the floor and asked that villain's hand be ruled dead since he had intentionally exposed his cards with action to come.
What is your ruling? I will detail what actually happened later. I don't want to influence your thoughts on the topic.