The inventive language created by doctors the world over to insult their patients - or each other - is in danger of becoming extinct.
So says a doctor who has spent four years charting more than 200 colourful examples.
Top medical acronyms
CTD - Circling the Drain (A patient expected to die soon)
GLM - Good looking Mum
GPO - Good for Parts Only
TEETH - Tried Everything Else, Try Homeopathy
UBI - Unexplained Beer Injury
And the number of terms for patients believed to be somewhat intellectually challenged is enormous.
From LOBNH (Lights On But Nobody Home), CNS-QNS (Central Nervous System - Quantity Not Sufficient), to the delightful term "pumpkin positive", which refers to the implication that a penlight shone into the patient's mouth would encounter a brain so small that the whole head would light up.