Here are all the celebrities who have paid tribute to Rob Reiner and his wife, Michele Singer, after their tragic deaths.

Join Josh and Ollie as they take on a hilarious "try not to laugh" challenge with a twist—each time they laugh at funny viral clips, they get blasted in the face with a blue drain cleaner air gun!

Join Josh, Ollie, Sho, and Andy—aka Jolly Shandy—as they face Ollie's new Try Not To Be Surprised Challenge! Watch their hilarious attempts to remain poker-faced through viral videos, epic fails, and ...