Frogs & snails & puppy dogs' tails. It�s actually a general misconception that little boys are made from these things. Whereas, in fact, little boys mutate from bogeys.
Apparently, it's actually good for children to eat bogeys, as it builds up their immune system. Children who are wrapped in cotton wool constantly are more likely to get ill in later life. It's true!
Robbo is right, bogeys can be eaten as part of a calorie-controlled diet. Too much though, and you can become an addict; like white van drivers and builders, who are also prone to other addictions such as shouting and bum-picking.
Some research suggests that mucophagy (mucus eating / nose picking and eating) may be a natural and even healthy activity, which exposes the digestive system to bacteria accumulated in the mucus, thereby helping to strengthen the immune system. The body ingests a certain amount of its nasal mucus naturally as well.