Blonds are dumb.
"All birds can fly because I saw a robin flying yesterday." This is an overgeneralization fallacy because it assumes that all birds share the same capability based on the behavior of one bird.
A duck
An example of a fallacy is reducto ad absurdum. This is when you exaggerate someone's argument to a ridiculous extent and then proceed to criticize the result.
Overgeneralization
Stereotyping is a form of the overgeneralization fallacy, where a broad assumption is made about a group of people based on limited or biased information.
She's good at basketball, so she's probably good at all sports.
The sentence 'All dogs will bite when teased.' is an overgeneralization and dangerous to many dogs. We must take care when speak; overgeneralization can be used against the party, as well as for the party.
A fallacy is a statement that is in error or not correct. "The earth is flat" is a fallacy.
overgeneralization
The origin of the word fallacy dates back to 1350-1400. The word fallacy means deceptive or misleading. As a simple example, when one says the world is flat it is a complete fallacy.
I'm going to go with Argument from fallacy
something to be proud of
 B. overgeneralization. Apex
One example of a fallacy is the ad hominem fallacy, where an argument is attacked based on the person making it rather than the actual argument itself. This fallacy involves attacking the opponent's character or personal traits in an attempt to undermine their argument, which is not a valid or logical way to engage in a debate or discussion.