A mysterious room inside Lagan College, Belfast which location is only known to a few. To reveal Its secrets you would have to know a very complicated and acient password.
Irrelevant Andy: Yo mateee Wheres the Shack
Anyone: Fuck up Andy stupid twat
Sort of like saying something is 'the shizz', etc. etc.
Recycling is the shack.
A beat up spot, ghetto place, or made of cheap materials, busted, pieced together
This bitch livin in a shim shack, the spot was falling apart, roaches an shit