Originally posted by tim60 So “smergherd” is supposed to be some kind of insult.
ROFL....you could say that yes!
True story.....when they were filming the early Red Dwarf shows they wanted a swear word or phrase they could get past the pretty stringent censorship rules on British TV at the time but the writers/producers couldn't think of anything suitable. The great Craig Charles a.k.a. 'Dave Lister' chimed in with a comment that back in Liverpool they had a phase for someone who was an idiot or a 'waste of time' and that was 'smeghead'. The writers/producers had never heard the term before and asked Craig if he was sure it was safe to use and he assured them it was a term local to Liverpool and no-one else would understand it! So they adopted the word and used it in many forms in the show, 'smeghead', 'smeg-off', 'smeggin' this or that, it was basically used as a replacement for a common 4-letter swearword that starts with 'F'!
It was only months (possibly a year plus) later and long after the series had become hugely popular that the writers/producers discovered to their horror that they had been duped by Craig and the term was extremely rude and offensive!
It is in fact a shortening of the medical term 'smegma' and Goggling that can lead you into a very dark place! Here's a quick definition if you are interested:
Smegma Definition & Meaning - Merriam-Webster
The fact that the writers/producers used the term for months before they found out and were then forced to keep using it because it worked in the show makes it extra funny when you hear it used.