Top 20 Scenes Where Actors Couldn't Keep a Straight Face

You know you've done your job well when your scene partners can't keep a straight face. For this list, we’re taking a look at scenes that were so funny that the actors couldn’t help but crack up or smile, even if only fleetingly. Our countdown includes “Dumb and Dumber”, "Easy Rider", “Fast & Furious 6”, "Friends", “The 40-Year-Old Virgin”, and more! Which of these scenes made YOU laugh the most? Let us know in the comments!