Poker glossary
J‑Boy
J-Boy is slang for a jack. The J stands for jack, and 'boy' is used as a nickname for the face cards.
The simple explanation
If a player says 'J-boy', he means a jack.
A closer look
The name is one of many nicknames for the jack, with jake, john, hook and knave. It does not change the rules. Nicknames like this appear in table talk and help to keep the game light.
A practical example
A player says: 'I have a J-boy and a king.'
Full explanation
J-Boy is slang for a jack. The J stands for jack, and ‘boy’ is used as a nickname for the face cards.
J-Boy is slang for a jack.
The J stands for jack.
Other nicknames are jake, john and hook.
The card is the same.
Alternative spelling: J Boy