The mayor of Boston Tuesday warned the young adults making films of themselves diving head first from windows into snow piles to "stop their nonsense right now."

Mayor Martin Walsh issued the unusual warning at a morning press conference that focused on snow removal and extreme cold, The Boston Herald.com reported.

"This isn't Loon Mountain, this is the city of Boston, where we're trying to remove snow off the street and it becomes very dangerous," he said.

The Washington Post reported that these participants strip down to their underwear and dive into the huge banks of snow. Then they take to social media and post it under #BostonBlizzardChallenge.

The Post called the trend a "Bucket Challenge-esque show of bravery and machismo."

Walsh restated how serious the snowfall has been in the area. He said the latest snow storm left one person dead, apparently due to a heart attack while shoveling snow. A partial roof collapse at an eight-building apartment complex in Portsmouth, New Hampshire, left 500 to 700 people looking for shelter.

"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," he said.