Expose One Card
Whether your laying down your hand to a big bet, or if no one called your bet, if you really want to keep your opponents on their toes, use CasinoUnreal's 'expose one card' feature.
Some poker rooms allow you to show both your hole cards, but at CasinoUnreal we go one further and allow you to show either both your cards, or just one card.
Say you had top pair but a weak kicker and you couldn't call a big bet you might show your high card to prove you weren't on a complete bluff. Conversely you might show your low card, to appear as if you were on a complete bluff. Either way showing only one card generally leaves your opponent asking more questions for which you gave answers with the card that you did show.