A person who recklessly blows his nose and gets snot all over everything.
For example a tennis player who uses a
finger to
block one nostril then blows out the other nostril onto the court, not caring whether his opponent might slip on the snot after they
change sides.
Andre Agassi is not only a US Open
Champion, but also a Snotmaster of the highest caliber.
When his opponent slipped on his tennis
court snot and was injured, Andre was awarded the match by
default.