TIL about Shopping cart theory.
Quoting Know Your Meme:
The Shopping Cart Theory refers to a social theory that states whether a person returns a shopping cart or not after using it serves as an ultimate indicator of whether they are a "good" or "bad" member of society.
Quoting Wikipedia:
The shopping cart theory is an internet meme which judges a person's ethics by whether they return a shopping cart to its designated cart corral or deposit area. The concept became viral online after a 2020 Internet meme which posits that shopping carts present a litmus test for a person's capability of self-control and governance, as well as a way to judge one's moral character.