Welcome to my newest and best try not to laugh, smile, or grin while watching this challenge! This is the hardest version out there and this video is impossible to .\rbr\rbr(IMPOSSIBLE CHALLENGE!) Try Not to Laugh or Grin While Watching This - (FUNNIEST VERSION EVER) So there is this popular video on YouTube where the .\rbr\rbrMy newest and best try not to laugh, smile, or grin while watching this challenge! This is the hardest version out there and this video is impossible to not laugh to!\rbr\rbrHope you enjoyed this TRY NOT TO LAUGH OR GRIN WHILE WATCHING THIS IMPOSSIBLE CHALLENGE You laugh you lose so try not to laugh! Hope you .