Fun prank for friends and family. they do #1 or #2 and it flashes right back at them! but make sure you make the cling wrap very tight no wrinkles!!! – mjf57 March 7, 2019March 7, 2019 admin Pranks Fun prank for friends and family. they do #1 or #2 and it flashes right back at them! but make sure you make the cling wrap very tight no wrinkles!!!