In "Moonlighting," Jamie is hot on the trail of a business run by the Mafia. He has evidence stored on a flash drive that could implicate the suspects in criminal activity, but swallowing it is the only way to smuggle it out. When some thugs visit him looking for the drive, the bid's successful because they don't get their hands on it, but Jamie's roughed up pretty good. He's a hero, after all, but his family likes to have fun at his expense.
During the family dinner scene of the episode, Jamie's family goes around telling stories of how he would swallow various things as a kid, from dimes to a key. Jamie has a good sense of humor as he's laughing along with everyone else, but it hurts to laugh, so he kindly asks his family to lay off. But that doesn't stop them from going around the table and listing off everything Jamie has swallowed in the past. And with each passing turn, the bit becomes funnier and funnier as even Jamie can't help but chuckle.
The Reagans weren't the only ones laughing during this conversation. On the YouTube video of the scene, numerous comments rolled in from people speaking highly of the moment. One user wrote, "I love that moment. It's [the] most funniest scene in the whole series." Someone else chimed in with, "This scene cracks me up every single time!" The Reagans rarely crack a smile, so when they laugh so jovially, it's a heartwarming sight to see.