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.
The act of giving someone the most intense orgasm they will ever experience in their entire life.
When you said you were going to give me a spazz attack, I really didn't expect IT to be that f**king incredible!