There are certain boogers known as "The Unpickables." These are bastard boogers typically located near the upper front part of the nostril that are impossible pick no matter how many different ways you twist your finger. The Unpickables can only be removed with several nose blowings and once they're finally out, they usually take a few civilian nose hair casualties with them. It also might interest you to know that eating boogers is good for you because apparently it strengthens your immune system.