Sometimes used to describe the fashion or attitudes of people who haven't quite moved into the modern era.
The reason "Mammoths are not extinct yet" has stuck around is due to the sheer absurdity of the sentence. In an era of "brain rot" humor and random memes, the idea of a prehistoric elephant roaming the streets of the Czech Republic serves as the perfect non-sequitur. czech streets 149 mammoths are not extinct yet link
To understand the "149" reference, you first have to understand the "Czech Streets" phenomenon. Originating in Prague and surrounding cities, this genre of content typically involves a "host" approaching locals or tourists with various challenges, interviews, or offers. Sometimes used to describe the fashion or attitudes