Bog off

[purification]

Where does the phrase bog off Originate from?

[Quizmonster]

I suspect it's a variant of the much cruder six-letter form that begins 'bug' and ends 'ger' with 'off', meaning "Go away!"

[Marsh]

It's also a retailing acronym -"By One Get One Free"

[Marsh]

Sorry- "Buy one get one free"

[purification]

ahhhh! Doh! Of course! Will replace my brain cell tommorrow looks like it's gone dud! Thank You though, much appreciated!

[Bert]

I think it was Porridge that introduced "naff off" as a harmless alternative to something much cruder. Whether there is any connection with "naff" in the sense of vulgar, or socially crass, I don't know.

[Marsh]

"Naff off" was first seen in print in "Billy Liar" in 1959, along with "naffing".   "Porridge" started in 1974.  "Naff" might have started as back-slang for fan(ny) - UK usage, not US.

[joko]

bog is used to describe a toilet (perhaps its a northern thing) it is from the look of a real bog - or swamp - being akin to a really dirty toilet.

perhaps it is just a 'nicer' way to 'swear' without actually swearing.