NPR (Holly J. Morris) - What is the 'tarps off' trend that men are engaging in? Find out in the quiz
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NPR (The Associated Press) - Shirtless fans cheer at MLB stadiums as "Tarps Off" trend sweeps baseball world
At ballparks all across the country, groups consisting of mostly young men are joining in on the trend: Go to the section where the party is happening, take off your shirt and start twirling it above your head.