That is a good one. My players are pretty good at delivering lines during role play that make me laugh so hard that we need to take a break. One example today came as the player of a new character was RPing his way through a conversation with an older character about what they were doing, and why. The older character was explaining the evils of New Valeria.

"It's just... not a nice place," he said, eventually.

"I hear they eat babies there!" the newer character, Janar, puts in.

"Snrk!" I said, ducking down behind the screen and choking with laughter.