Mayor Martin J. Walsh blasted city residents who have been filming themselves jumping out of the windows of their houses into snowbanks yesterday, calling the social media craze “a foolish thing to do” with potentially fatal consequences.

“I’m asking people to stop their nonsense right now. These are adults jumping out windows,” Walsh said during a morning press conference aimed at providing residents with an update on snow removal efforts. “It’s a foolish thing to do and you could kill yourself.”

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Walsh, who said he first learned of the Twitter video trend when watching the news Sunday night, urged city residents to use common sense.

“We’re asking people to act responsibly in the city of Boston,” Walsh said. “This isn’t Loon Mountain, this is the city of Boston, where we’re trying to remove snow off of the street and it becomes very dangerous. And the last thing we want to do is respond to an emergency call where somebody jumped out of the window because they thought it was a funny thing to do.”