Hearing people throw around the words "delusional" and "delulu" so often when they clearly don't know what it means is so silly to me at this point, but also a little frustrating.
Like I heard someone in a video say "she's the worst type of delulu, where she actually is in a different reality" while describing someone being cocky and overconfident.
As a reminder, delusional means someone is holding a belief or altered reality that is persistently held despite evidence or agreement to the contrary, generally in reference to a mental disorder. Delusions are typically beliefs that exist outside of objective or common reality (so not something subjective like "this art is good"). It is often unshakeable, people can't be talked out of their strongly held belief even if it is completely nonsensical. They typically cause a disturbance to your life, unlike a spirituality or religion that you enjoy.
So someone saying "I'm the most attractive and most talented person in this room" might be annoying, but it is that person's subjective belief. It's your subjective belief that they are not, but neither is right or wrong because it is subjective.
Having a crush on a celebrity and wanting to marry them and imagining that happening is a conscious choice, it's a daydream. Meanwhile delusions are not conscious choices, it is a symptom a person has whether they want it or not.
It's important to uphold the true meaning of this word, because it describes a mental condition that impacts many people. Having the words definition change by making it mean other things does harm us. If we want to open up to a friend about a serious mental problem in our lives by saying "I have delusions", that person should know the gravity of that, and not think it's some fun quirky personality trait that everyone has.
Also the way people misuse the word tends to be in a negative or insulting way, aimed at the delusional person. But delusions dont indicate anything about the delusional persons personality and morals. The delusions are caused by a mental health problem and not chosen by the person. This is important to remember when people have strange, mean, self centered, taboo, or scary delusions, it doesn't mean that a person wants to believe that, they can't control it.
So please try and use the words "delusion" and "delusional" correctly, don't give it a cute trendy nickname like "delulu". And try and educate the people around you about the actual meaning of these words, and the impact of misusing them.