An explosive sneeze (or, occasionally, a vigorous nose-blow) that projects a large payload of wet mucus ("snot") directly into and onto everything in the immediate vicinity of the deliverer. Ordinary tissues are insufficient to contain its volume when expelled with its characteristic great force.
"Holy Mackerel, Mudhead! That wasn't a sneeze! That was a-- a SNOTSPLOSION! Just look at this mess!"
by malbuff January 7, 2021