The arms of the Kingdom of Siam were created during the reign of King Chulalongkorn the Great, Rama V, when the Kingdom was exposed to Western traditions, ideas, and also European threat of colonialism. King Chulalongkorn, who visited Europe twice, modernized Siam and adopted many of the European traditions to his court, including the use of heraldry.
Dining etiquette for eating rice. Rice is generally served in separate bowls, not on the same plate with your food. While rice is a staple, it is not necessary to eat every grain in your bowl; leaving some over is fine. In fact, if you eat everything in your rice bowl or on your plate, it means you want more. Do not take the last bit of food from a central serving plate; that means there will be none left in case someone else wants some. Also, a sauce may be mixed with the rice, and the main dish may be eaten with the rice, unlike the practice in Japan. You are expected to hold the rice bowl by your mouth, take a bit of food and sauce from the plate below, hold it over the rice bowl and shovel it all in together. If you're eating noodles or broth, it is not appropriate to slurp the food; however hot tea may be slurped quietly to cool it off as it enters the mouth.
Dining etiquette for toothpicks. Toothpicks are generally used at the end of the meal. The best way to handle a toothpick is to work away with one hand, while keeping the other hand in front of it over the mouth, as a sort of mask.