F’rinstance…
“Well I’ll go to the foot of our stairs”
and
“Daft as a Brush”
and
others along the same line.
These may well be British in origin but how did they come about
Both from www.phrases.org.uk
Seems both are British in origin.
‘Daft as a brush’ is discussed here and here.
Both sources support Shrinking Violet’s chimney sweep theory (on preview).
You Shrinking are a mine of info. Thanks a bunch for that site…however…
It does not give the origin of “F**k me standing low” or “Well I’ll stand pissing”
These being just two filthy sayings of which we Northeners are fond of 
Now c’mon chowder … you made those up, didn’t you. 
I can’t add any more to the origin of “go to the foot of our stairs”, but I can say that the origin of “daft as a brush” is, in fact, known and recorded, and has nothing to do with chimney sweeps.
The original (Northern English) expression was “soft as a brush” (ie soft in the head).
It was adapted to "daft as… " and used as a catchphrase by comedian Ken Platt. His obituary says that he added it to his act in 1951, though I have a book here that quotes him as saying: “I started saying this when I was doing shows in the Army in the early 1940s. … People used to write and tell me I’d got it wrong!”
Where the chimney sweep idea came from I don’t know, but it does show the effectiveness of the internet at promulgating peoples WAGs.
No honestly I didn’t.
Matter of fact there are any number of sayings along those lines.
Example…" F**k my old boots"
I suspect they are native to the north of England 'cos we aint as posh as what they are darn sarf 
One I heard recently: “Bless his little cotton socks”
Yep another good one along with “Fit as a Fiddle”
What?
Quite.
My grandmother (Suffolk) had quite a few little sayings she would often come out with, among them:
“I’ll give you socks” - once I got old enough to wonder, I decided “socks” as in “sock round the ears”.
“oh FOOT!” - her own little swear word.
“Well I’ll be jiggered” - this may be more widespread (I can well imagine your version chowder :D)
“joeing” - talking, as in “I was held up joeing to Mrs Smith”. Possibly joeing = jawing?
“hocker with laughter” - not sure where that comes from.
Many more which I can’t bring to mind.
Jiggered??
You mean savagely rogered surely.
Socks!! My mother used to threaten us with “A box round the lugholes”
The thought of my lovely, meek little Nan saying that! :eek: 
According to dictionary.com, to “sock” is to deliver a blow - btw this was only ever said in an affectionate, jesting manner. No thug, my Nan.
Here’s one I asked about in its own thread and never got a clear answer for:
My prim-and-proper grandmother (who would NEVER use vulgar language) said of a friend’s baby: “Poor little thing is just as ugly as a dick.”
Gave me pause, it did. I wondered briefly if I should tell her that she was using a word which had a very different meaning in today’s world, but decided not to embarass her.
Anyone know where that might have come from?
Ha! My mum used to threaten to “box my ears”, too.
Does anyone in England still say,
“not half <doing X>”, actually meaning “<doing X> to a great extent”?
Not half mate, not half we do
Lissa I never heard that expression but I have heard “Face like a blind cobblers thumb” or Face like a Slaters Nailbag" or even “Face like a sack full of Hammers”
Or the American redneck version “about”
Heard someone say to his misbehaving dog, “Dog, you’re about a mother******, ain’t ya?”
See also, Doug Sahm’s “She’s About A Mover”
[QUOTE=Shrinking “Well I’ll be jiggered” - this may be more widespread .[/QUOTE]
“I’ll be jiggered” is used here in New England, mainly by people over the age of 60.