A "white snot surprise" is when a person is giving you head, and you cum so hard that it goes out of their nose.
by Sleepy_Joe September 01, 2009
You're getting head from a girl, you bust right up her nostrel and say you have siphilis and watch her launch it out like a snot rocket. Just whiter.
by Nose Boner May 11, 2009
by Erika's a jew October 18, 2013