Jimmy Fallon may be a polarising figure on the internet, but he can bring in the ratings. Some believe he's fake, while others are drawn to his charisma. This video breaks down how to emulate that charisma on your own.
Even if your conversational partner can't hear you laughing or see you smiling, it's important to express your appreciation of a joke or a funny story. The many popular options can be boiled down into two types: The hahaha of simulated laughter, and the lol of metaphorical laughter.