Most prominently, it's universally considered unhealthy luck to say the word "seven" (after the "come-out", a roll of seven is a loss for "move" bets). Dealers themselves often make important efforts to keep away from calling out the quantity. When necessary, members might discuss with seven with a "nickname" corresponding to "Big Red" (or just "Red"), "the S-word", etc. In some circumstances, gamers can also tip each other, for instance as a present of gratitude to the thrower for a roll on which they win a substantial wager. Craps is among the most social and most superstitious of all playing games, which leads to an enormous number of informal guidelines of etiquette that players may be anticipated to observe. An exhaustive listing of these is beyond the scope of this article, but the pointers under are mostly given. Casino guidelines vary on this; some of these bets is probably not callable, whereas others could additionally be considered "working" in the course of the come-out.