Ask any gambler if they have any quirks, routines, superstitions, or lucky items; everyone of them will have one, if not all of those, in their list before, while, or after they play. Does not matter if they play cards, roll the dice, follow the roulette wheel or bet on the horses; a gambler is a different breed of person and their mannerisms are done religiously.
In truth, these things that they do really do nothing but psyche them out, get them ready, and put them into the zone—it is something they do to make themselves believe will put luck on their side and help them win. It is all balderdash.
The crap table is no different. Some of the quirks are “do not touch the dice when they are being rolled by another player.” If this happens a 7 will always show up after the roll that goes over the table. POPPYCOCK! They do not realize or understand that each roll of the dice is its own world and nothing before or after effects the roll that is being rolled; and not to mention the fact that the 7 can come up more often than any other number—but gamblers will do what they think helped them win the last time—even wear the same clothes without washing them.