Such as “money can’t buy happiness” or “what doesn’t kill you makes you stronger”. Generally a false adage or something like that. All I could think of was “fallacious bumper sticker” which just sounds stupid.
‘An old wives tale’
Not all wives tales are false. Most are, but not all.
“Blood is thicker than water.”
Usually said to convince someone that you should be there to help family regardless of what that family did to you. Unfortunately the full saying is “The blood of the covenant is thicker than the water of the womb”, meaning the ties you form with friends can be stronger than the family you you born into.
This is probably not true. The concept of this phrase but referring to family is probably a modern confusion. There is no clear evidence it means it was really referencing ties to friends. Although I wish it did. Here’s some further reading from others also looking for a clearer reference.
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One of the biggest cliche revisionist histories I know of is “Jack of all trades, master of none; often much better than master of one.” It’s an interesting one because it’s been retconned twice.
You’ll hear people respond to first line by saying “um actually the second line of the poem totally changes the meaning.” Yes, it did change the meaning when it was added in the 21st century, 400-500 years later.
Then you’ll hear people one step closer to accuracy who correct “Jack of all trades” by reminding the speaker that it’s not a compliment because it ends with “master of none.” Except the master of none bit wasn’t used until the 18th century, and the second revision with the couplet may actually closer in meaning to the original!
The original, simple phrase “jack of all trades” was first used in that form in the 16th century, possibly as a reference to Shakespeare, and definitely as a phrase that was intentionally ambiguous about whether it should be interpreted as a compliment or insult.
https://en.wikipedia.org/wiki/Jack_of_all_trades?wprov=sfti1#Origins
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Most of those old sayings have had the rejoinder omitted, which completely shifted their original meaning, in fact. For example, “Great minds think alike” originally closed with “but rarely do they differ”, etc.
“Fallacy” works. These are also adages, clichés, platitudes and folk wisdom, but neither really means “falsehood” per se. However, many of them just rationalize whatever: the money one is factually incorrect and exemplifies “sour grapes”, silver linings is not a bad idea but also not necessarily true, any number of things will not kill you but make you wish they had, etc.
A Canard (French for duck) refers to something often believed to be true but isn’t.
The origin of this expression is because the French do not believe that Quebec is real.
Tabernac.
It’s ducks all the way down.
🇲🇶🦆💬"Ouai"
L’honk
Honque*
These fall under the category of “Half-baked Idea”. This includes any idea that obviously hasn’t been thought all the way through. Half-baked ideas can range from the absurd (e.g. “The Earth is flat.”), to the benignly optimistic (e.g. “Everything works out for the best.”)
A proverb.
Because your examples are actual proverbs, that might be considered true or not, depending on who says it when.
I dunno. Something being a proverb doesn’t make it inherently false, which is what we’re trying to define I guess
The examples OP provided are not inherently false because they are proverbs.
For example someone says “you can’t teach an old dog new tricks” and you might say “that’s a questionable phrase.” or “I doubt the validity of that platitude”. But is there something specific to label it as, i.e. “That’s a [insert word]”
If you’re not trying to be polite, “That’s bullshit” works perfectly.
“Myth” is a word I’d end that sentence with.
Misconception?
Colbert’s “truthiness” comes to mind
“Canard” is the term, as another commented. 🤙🏼
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I like Fallacious Bumper Sticker! I’m absolutely using that going forward. It’s better than Pithy Folk Ignorance that I used to use.
I dunno, I kinda like Pithy Folk Ignorance.
Platitude
ish
“Decimate” =/= “devastate”, but common misuse becomes common use, so here we are. 🤦♂️
Language is fun like that. Kinda like how ‘literally’ can, and often does, mean ‘figuratively’, which has the opposite meaning.
It annoys me that people keep saying “figuratively” is what they mean instead of “literally”. “Figuratively” may be the opposite, and technically correct, but the use of the word “literally” in this way is to strengthen a statement. A more appropriate correction would be “actually” or “seriously”, which holds the intended meaning. “Figuratively” is the last thing it should be replaced with.
The meaning of a word doesn’t change just because you use it incorrectly.
It does if lots of people use it incorrectly
That is literally how language works. Words only mean what we mean when we say them.
So if I potato, you can ottoman?
If enough people agree, yes.
They don’t.
That’s actually the point. Nobody agrees that potato=ottoman but if enough people agree on a meaning it starts to become the meaning or at least a partial meaning. Maybe the point is moot with you but I get the feeling you wouldn’t understand the joke.
Common nonsense
I’ll call it that way.
Adage
How has nobody said this yet? Some guy actually said idiom.
Because an adage isn’t necessarily untrue, like the OP is asking.
Bollocks.
Bullshitism.
Baloney
In the actual deep south we say “fruta”, “frula”, “saraza”
