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 02, 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 12, 2009
by Erika's a jew October 19, 2013