I'd heard that eathing one's boogers can actually be a healthy choice. SO I put it to the test, and I'm a believer. Yah, I know, gross right...
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.
Modern scientific research suggests that mucophagy seems to be a natural and even healthy activity, which exposes the digestive system to bacteria accumulated in the mucus, thereby helping to strengthen the overall immune system.
The body even naturally encourages the formation of a dense, salty coating to the boogers to make them more palatable. There is no other known reason for the high salt content in the mucus in the nose.
In mankind's caveman times - it would not have been strange to spend an evening sitting around with friends and sampling each other's boogers. It sounds disgusting - but its simply part of our instinctual primate grooming behaivors that have only recently been repressed through collective social training.
Just as the collective social training that has depressed cannabis use - booger use too has suffered. I can say that I occasionally slip a booger in my mouth and I was the only member of my family that didn't get sick over the holidays. Go figure!