The urge to consume large amounts of snack foods brought on by inhalation of smoke from the combusting leaves of the cannabis plant.
After smoking a bowl of blueberrychronic, Mike had a serious case of the munchies. He ate two cheeseburgers, half a bag of doritos, some chocolate chip cookies, fun size snickers, microwaved nachos covered in mozzarella cheese, french toast, some micro ravioli, and then he ordered Dominoes.
The feeling many people experience after smoking cannabis sativa usually characterized by an increased sense of hunger and appetite. When one has "the munchies" they are not always very hungry, but become attracted to the feeling caused by eating as tastes and smells are greatly enhanced.
After smoking, my friends and I always have the munchies so we head to the gas station and get food.