The term 'Jokester or Joker' can be summarized by the crossword solution of the word 'CARD', which has four letters. A CARD is a flat, usually rectangular piece of stiff paper, thin pasteboard, or plastic, especially one used for writing or printing on. In the context of jokesters or jokers, a CARD is often associated with playing cards, which are used in many CARD games and have been used for centuries for both divination and entertainment. Playing cards are also commonly used as a tool for humor, as jokesters or jokers often use them to make jokes or play pranks.