An expression used to describe a really extreme night / bender on which you consume so much alcohol and class A drugs that you put yourself in genuine danger of killing yourself. A really extreme mash up.
On Tuesday I was only meant to be going out for one drink with Rowan but we ended up smashing the black granny out of it and now I've lost my job and I can't remember where I live or what my name is.
Ususally used in an office environment, this term describes when there are not many teabags left so it is prudent to use 1 teabag for an entire round of teas to make the remaining bags last as long as possible. So named due to the reluctance to shell out for a new pack of tea due to the global credit crunch.
Paul: Justin are you making the teas then?
Justin: Sure... Only 3 bags left so is everyone up for a credit crunch tea?
Paul: Yeah go on then.