Suicide King
The suicide king is the king of hearts. It got the name because in the picture, the king seems to be stabbing himself in the head with his sword.
The simple explanation
In a standard deck, the king of hearts is the only king shown with a sword behind his head, which looks as if he is stabbing himself. That is why he is called the suicide king.
A closer look
The name is used as a nickname for the card in many card games, not only poker. In Hold'em, it is just a king with no special rule. It shows how card slang often comes from the pictures on the cards.
A practical example
A player says, 'The suicide king came on the river,' when the king of hearts falls.
Full explanation
The suicide king is the king of hearts. It got the name because in the picture, the king seems to be stabbing himself in the head with his sword.
The suicide king is the king of hearts.
The picture looks as if he stabs himself.
It is only a nickname.
It has no special rule.