So, what exactly is 'Jimmy Falloning'? Well, it's a syndrome, a name, and a verb all in one. The Urban Dictionary describes the term as "Breaking character. Laughing or going out of character while performing an act." Just as the "SNL" alum is known for.
Luckily for Fallon, he's in good company when it comes to breaking character. Some famous scenes that have been broken by actors who have fallen victim to so-called Jimmy Falloning include the now legendary "Friends" scene in which Ross was trying to carry a couch up the stairs and was yelling "pivot." Per Crafty, a memorable segment from "The Wolf of Wall Street" was Jimmy Falloned when actor Jonah Hill couldn't keep a straight face with his co-star, Jon Bernthal.
Luckily for Fallon, his inability to stay in character is viewed as more charming than unprofessional, so he manages to get away with it.
