An extremely snotty, annoying, usually deliberately obnoxious person. This person goes above and beyond mere snotty-ness. Usually used when you really want to say "asshole" "dick" or "cunt" but can't.
My boss is a booger-napkin. He has long boring staff meeting every pay day.
My cat the original booger-napkin peed in my shoe.
Give me back the TV remote you booger-napkin!
You are a booger- napkin when you drink!