Seven come eleven  is a popular saying that can be heard at the dice table to attract luck. The meaning of this expression is simple  the first roll in each session is victorious when a player hits seven or eleven. Other popular sayings that are common among gamblers: Bet the farm.
The number 7 has been traditionally associated with good luck and fortune in many cultures, and this belief has carried over into slot machines. In many slot machine games, the number 7 is often used as a symbol of luck and is featured prominently on the reels.