I know all those except stay shtum and putpocket (unless it means thrifty).

Hmmm, never heard of putpocket...maybe because no one's tried to put $ in my pocket in....well, EVER...hahah

I am not sure of the first, I am unsure what the lesson was on the second (maybe I just know it too well?) amd never heard of the 3rd!  I suspect it is the same as leading a horse to water?

Ahhh...idioms...my favorite part of any foreign language...or my own, for that matter.

How about:  "um die ecke bringen"  or "uebung macht den meister"  or "ein...zwei...sofa!"  (Sorry, still got Fasching on my mind).

http://en.wikipedia.org/wiki/Teaching_grandmother_to_suck_eggs

"I have to see a man about a dog" also works with "a horse". My dad used to say that. I know most of those phrases....what's a Salt Cellar? I know what a fruit cellar is, my grandparents had one.

Another, more local term, is "Tallulah", as in "She's a Tallulah!"; most commonly meaning a brash, overbearing woman.

"Got to see a X about a X" is just a term used to mean you have something to do.

And don't forget the old "Dutch Courage" or the ever popular "Dogs Bollocks"

Swearing?! perish the thought (granted IRL i'll pop out a swear word per sentance, but online i try to remain a little civil, people get confused easily).

Dutch Courage - An alcoholic drink prior to something stressful (aka, asking a girl out etc). Possibly from the times of the Black death. London was often quarentined, Dutch merchants were one of the few who would breach the lines, usually after having a drink to steady the nerves.

Dogs Bollocks - Used to refer to something thats great (Sins of a Solar Empire is the dogs bollocks), born from the question why do dogs continuously lick their balls? Nobody knows...but they must be great to keep doing it.

Dutch Courage="courage in a glass", or "liquid courage".

Here in West Virginia, we've been known to "red up", meaning to tidy up a little bit, but not actually clean. It's a regional saying, though, and oftern attributed to "burghese", or "Pittsburghese", a dialect originating in Pittsburgh, Pennsylvania...or, if you'd rather, "Pixburg, Pannsavaynia".

Such Yiddishisms are very common in the US and certain parts of London.

This particular term has several meanings besides the obvious.

No, I have to correct you here, Doc; the more common usage of the term, in Pixburg, is "yinz guys". "Youse" does occur, but "yinz" is more commonplace.

Attend to the following sentence:

"Firs, ah'm goin' ta da Strip Distric' t'git sumpin' to eat; then ah'm goan to watch da Stillers play da Brahns on TV. Then ah'm goan dahn-tahn, ta da tiddy bars 'n'at. Enny-a yinz guys wan' go wid me?"

(Translation: "First, I'm going to the Strip District (shopping area) to get somthing to eat; then, I'm going to watch the Steelers play the Browns on TV. Then, I'm going downtown, to the titty bars and that. Any of you want to go with me?")

That is classic "(Pitts)'burghese", for all you neophytes out there.