The location where cocaine is made. In other words, a crack house/meth lab. Usually inhabited by rough looking men in lab coats and mouth covers, using razors to cut up cocaine, then weighing it and putting it into bags. Also in the Snorting Office there are guns of many calibre's and a dodgy looking chap who puts the bags of weighed coke in his pocket or shoe or wallet and then goes out and sells the drugs.
Dave: Did you get the stuff???
Greg: Hells yeah, its real fresh too.
Dave: How fresh??
Greg: Literally fresh out the Snorting Office.