The combination of the words snow and n00b. It can be used to insult someone who does not know how to drive or deal with snow. It can also be used as an insult that has nothing to do with snow.
Person #1: Did you just see that car spin out after only one inch of snow?
Person #2: Yeah. What a sn00b.
Term used to describe any person who uses the SMAW in Call of Duty Modern Warfare 3 to frag players. Even more annoying than the flash n00b and possibly the only thing to top the n00b tube. The Sm00b will wreck your kill streak, piss on your body and ruin your life.....