A person, either male or female, who can be very over-dramatic, moody, weird, quirky, flamboyant, annoying, suggestive, passionate, passive-aggressive, and/or socially retarded (awkward). Someone who says very disturbing, mind-boggling, and/or hilariously "random" things (often at the most inappropriate times). Someone who is very eccentric or alternative in their manner of being emotionally and/or physically expressive.
You know, if you hadn't jumped on top of that car and started yelling "Tickle me with your tongue again, daddy!", people might not have yelled "Spazz!" at you.