Mucophagy (literally mucus-eating, also referred as picking one's nose and eating it) is the consumption of the nasal mucus, boogers, and other detritus obtained from nose-picking.
Some research suggests that mucophagy 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.
Funny enough! huh? You agree it or not? [ wiki ]