spaz

[spaz]Slang: Offensive.

noun

verb (used without object), spazzed, spaz·zing.

to move in an awkward or clumsy way (usually followed by out): She spazzed out and we had broken glass all over the floor.
to become more angry than a situation warrants (usually followed by out): Mom spazzed out when she smelled cigarette smoke on my clothes.
to twitch: He was spazzing and muttering to himself, like the old speed freak he is.

Origin of spaz

First recorded in 1960–65; shortening and alteration of spastic

also spazz, by 1965, U.S. teen slang, apparently a derogatory shortening of spastic. Also used as a verb.