It's interesting to investigate their origins.
"Hold your tongue"
Also, hold or keep one's peace. Keep quiet, remain silent, as in If you don't hold your tongue you'll have to go outside, or Jenny kept her peace about the wedding. The idiom with tongue uses hold in the sense of "restrain," while the others use hold and keep in the sense of "preserve." Chaucer used the first idiom in The Tale of Melibus (c. 1387): "Thee is better hold thy tongue still, than for to speak." The variant appears in the traditional wedding service, telling anyone who knows that a marriage should not take place to "speak now or forever hold your peace."
(Scene: a wartime RAF station)
Jones: Morning, Squadron Leader.
Idle: What-ho, Squiffy.
Jones: How was it?
Idle: Top-hole. Bally Jerry, pranged his kite right in the how's-your-father; hairy blighter, dicky-birded, feathered back on his sammy, took a waspy, flipped over on his Betty Harpers and caught his can in the Bertie.
Jones: Er, I'm afraid I don't quite follow you, Squadron Leader.
Idle: It's perfectly ordinary banter, Squiffy. Bally Jerry, pranged his kite right in the how's-your-father; hairy blighter, dicky-birded, feathered back on his sammy, took a waspy, flipped over on his Betty Harpers and caught his can in the Bertie.
Jones: No, I'm just not understanding banter at all well today. Give us it slower.
Idle: Banter's not the same if you say it slower, Squiffy.
~From Monty Python
"Grin and bear it."
To endure something unpleasant in good humor. There is nothing you can do but grin and bear it. "I hate having to work for rude people. I guess I have to grin and bear it."
We have one in Afrikaans -
maggies vol-oogies toe
It translates to stomach full -eyes closing
It means to eat so much that you get really sleepy
I also like 'Crack Someone Up' which means to make someone laugh.
Resistance is futile.....
'Can't wipe his ass with both hands'
'You'll shit and fall back in it'
My maternal grandmother often used both of these and strangely, I cannot find either phrase on any of the first four pages of Google. I must conclude, then...that they are two of her more colorful original idioms. She had a few others, which should come back to me, as I reflect.
The same GQP demanding we move on from January 6th, 2021 is still doing audits of the November 3rd, 2020 election.
"mad as a hatter"
Hatters found the best hats were made by treating the pig skin with mercury; it made the best kind of felt for a hat. Breathing the mercury vapors gave the hatter neurological damage including confused speech and distorted vision.
Across the ditch.
This idiom means on the other side of the Tasman Sea, used to refer to Australia or New Zealand depending on the speaker's location.
Tit for tat.
To give someone something equal to what was given you; to exchange a series of very similar things, one by one, with someone. They gave me the same kind of difficulty that I gave them. They gave me tit for tat. He punched me, so I punched him. Every time he hit me, I hit him. I just gave him tit for tat.
Away with the fairies
Means day dreaming
Bit of a dag
A person with a good sense of humour.
A dag is a bit of sheep shit that cligns the the wool around it's arse. xD
I could go on and on. :U
Hark! Give me isms over an idiom