Lanterns

The adventurers met at the cave entrance at dawn, and everyone was carrying a large lantern.
The thief. The fighter. The dwarf. The priest.
The whole party standing around, lanterns in hand.
The wizard scratched his chin. “Did anyone bring a weapon?”
The paladin and the dwarf looked at each other. “Well, we talked about it being dark in there last night, right?”
The wizard nodded. “I have a light spell, you know.”
The thief pointed at the wizard’s lantern. “So what’s with that?”
The wizard shrugged.
Back in town, the lantern salesman laughed all the way to the moneychanger.