Accidentally revealing your hole card during a card game can lead to various outcomes, depending on the game's rules and the context. Generally, it's essential to inform the dealer or game host about the mistake immediately. In many cases, revealing a hole card may render your hand void, especially in games like poker, where secrecy is crucial. The dealer will typically follow the house rules to determine how to proceed, which might involve reshuffling or simply permitting you to continue without the revealed card. It's important to maintain a good spirit about the situation, as such errors can happen to any player.