Bracelets, phones, and candy are just a few of the items that have lately been thrown at musicians on stage.
Adele is the latest celebrity to speak out about the concerning trend, telling a Las Vegas crowd that she would "kill" anyone who threw something at her, reports BBC.
In a widely circulated video, she tells the crowd that they have forgotten "show etiquette."
"Dare you to throw something at me," she joked.
Adele is well-known for throwing T-shirts into the audience during her Vegas residency, but her statements are in reaction to a series of events in which fans flung objects on stage, said the report.
Bebe Rexha was hurt and brought to the hospital last month after being hit by a phone while performing.
And when a sex toy dropped on stage when Lil Nas X performed in Sweden on Saturday, he appeared amused, the report also said.
In November, Harry Styles got hit in the eye with a sweet, and Pink appeared uneasy when a bag of human ashes was tossed on stage.
Ava Max has previously been smacked on stage, and in June, a bracelet was thrown at country artist Kelsea Ballerini.
Charlie Puth has also requested fans put an end to the practice, stating on Twitter that "the trend... must come to an end" and that it is "disrespectful and very dangerous."
So why are fans doing it?
Dr Lucy Bennett is a Cardiff University lecturer who studies the interaction between fans and their favourite performers. She believed that people's attitudes have shifted since the Covid-19 pandemic, "where we couldn't be physically present at concerts."
And Dr Bennett believed some individuals are doing it since it is more difficult to be noticed by artists on social media.
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"If you're in the same physical space as them, and you're throwing something, then you're going to get noticed," she said of the behaviour.