The folks at the "/whatever" YouTube channel are calling this a "prank," but it's really just a Bro walking around the beach, holding up a number to rank sunbathing girls. It's not really a "prank," per se, since I think a prank usually involves completely pulling the wool over someone's eye. It's more than just a random reaction. Still, the reactions from the scantily-clad ladies, however, are predictably hilarious. Perfect new way to start conversations with hot girls, huh?