Proverbs 26:2
 An undeserved curse has no effect. Its intended victim will be no more harmed by it than by a sparrow or swallow flitting through the sky.

Have you ever misquoted famous movie quotes or felt like masses of people believed that an event that actually did not happen? Indeed, human memory is far from perfect.
We all have experienced the Mandela Effect one way or another. In fact, a 2020 memory study from the journal Psychological Science found that, when asked to recall information, 76% of adults made at least one detectable error.
The Mandela Effect is a popular and heavily debated type of false memory. It refers to the situation in which many people thought that an event occurred when it did not.
The craziest part is that groups are headstrong and can remember an incident or distinctive experience, even when it is absolutely incorrect.
The three prominent features of the Mandela Effect can include:

1. Recalling entire events that simply did not happen.
2. Having warped memories where some aspects are partly or wholly false.
3. Several unrelated people share almost identical contorted or inaccurate memories.

Origin Of The Term

Looking at the source of the Mandela effect, some notable examples, and some possible explanations for this strange convergence of perceptions can help shed light on this unique phenomenon.
Fiona Broome started a website to observe this phenomenon in more detail. Here is where the origin of the term "Mandela Effect" was coined in 2009.
It all started when Broome went to a conference and began talking to other conference-goers about the tragedy of previous South African president Nelson Mandela and his death in the South African prison in the 1980s.
However, with further research, you find out that President Mandela did not die in the 1980s. Instead, he passed away in his own home in 2013. Broome talked to other people about her faulty memories, but she also learned that she was not alone.
The people she spoke to also remembered seeing news coverage of Mandela's death, as well as a speech made by his widow. There was quite a shock to Broome when she realized that a large group of people could remember an identical event in such detail, and it never really happened.
Fiona then began her website to discuss what she called the "Mandela Effect" and other incidents similar to this occurrence. Most of the time, these memories stem from or are based on popular culture.
Some of the most widely recognized examples would be people forgetting the actual color of a wrapper or packet of a favorite snack or trusting that the classic TV show "Looney Tunes" was indeed called "Looney Toons."

​derived from - https://www.simplypsychology.org/what-is-the-mandela-effect.html

The Mocker In Proverbs
​ Proverbs mentions various types of people and their characteristics. When we come to the mocker in Prov. 22:10 we read:
Drive out the mocker, and out goes strife; quarrels and insults are ended.
Much more is mentioned here:
The proud and arrogant man — “Mocker” is his name; he behaves with overweening pride.  (Prov 21:24)
A mocker resents correction; he will not consult the wise.  (Prov 15:12)
Do not rebuke a mocker or he will hate you; rebuke a wise man and he will love you.  (Prov 9:8)