YouTube on MSNOpinion

Most of these "try not to laugh" clips aren't even funny — here's the honest verdict

A classic "try not to laugh" compilation gets an honest, real-time reaction rather than a scripted overreaction, calling out ...
Amazon S3 on MSNOpinion

Watch this hilarious SFM try not to laugh challenge and see if you can resist a smile

Vapor The Gamer takes on the ultimate SFM Try Not to Laugh Challenge, reacting to a hilarious compilation of Source Filmmaker ...