Spaz is a shorter version of Spazmodically_insane, who was a forumer. What made him stand out was the fact that he hated n00bs so much that he ragged and flamed them constantly.
Another dirrivetive of the above spaz. To lash out at someone who is inexperienced or otherwise a n00b.
V: Come on man, don't spaz.
to spaz, spazzing.
"My leg/arm/head/otherbodypart's spazzing" - which is when aforementioned body part twitches erratically.
"She's totally spazzing." - when somebody is going mad ^^
Also can apply to people who are nervous, jumpy, hyper and needs to take medication to calm down. Uusally a spazz will blurt out unneccasary things to get attention.