Can be defined as 'Going Crazy' or used to describe another living or un-living entities, mental well-being or physicality. Depending on situation where it is used it can be deregatory or complimentary.
The origin of the word 'Spac' according to Brant, comes from the 90's cartoon 'Bucky O'Hare' and is the name of the group the characters belong to. It is painted on the bottom of their spaceship as 'S.P.A.C.e'. Apparantly... I dunno I guess I was pretty mashed at the time, and the cartoon was pretty spac.
'Man, I woke up and my mother just went Spac over nothing.'
'Kev has indeed gone Spac.'
'Kev just went Spac and headshotted like, everyone.'
'Dude that weed IS Spac.' - Positive
'Dude, that weed is spac.' - Negative
'It's like Predator, but gone Spac'
'The moral tendencies of todays society, has gone Spac'