Smashing the black granny out of it
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.