Word indeed often used in tv-series "The Sopranos". It derives from Italian 'questo cazzo', which literally means 'this dick'. With a neapolitan dialect it is pronounced ''stu cazz'', or stugats. Neapolitans use it when someone is trying to tell or sell them something worthless (it can also be an indication for fake: a stugats watch). The American use has more facets, for example it can be used as a swearword towards a person.
Someone that busts ass at everything (Ex: school, running, being a good kid, driving, girls, LIFE). Stuvasses are extremely cocky. Always careful to drink in moderation and planing snack breaks between drinks, Stuvass tries to stay in controll of all situations(esp. situations involving girls). They are also Sore Loosers, viewing everything in life as a contest that Needs to be won at all costs.
Antonym: Appletop
"Being a Stuvass, i plan on busting ass the first mile to get a good start, busting ass the second mile because it is mostly down hill, and busting ass the last mile for a strong finish."
The term used to define the period every Australian Year 12 student goes through in which they pretend to study before final exams but in reality waste away their last weeks on MSN Messenger and watching TV.
Person 1: So what're you doing at the moment?
Person 2: Playing WoW
Person 1: Ah so you're on stuvac?
Person 2: Yeah...