Something like the "Wolf, goat, and cabbage" mission from the game Endless Sky. It is offered when the game date is April 1st. You are offered 100,000 credits for delivery (which is generous given how early in the game the mission is likely to be offered, before the war event), but being an April Fool's joke, the goat eats the cabbage, then the wolf eats the goat as soon as your ship takes off. When you finish the mission, you read some silly monologue and get paid only a third of the posted reward (for delivering the wolf who ate the rest of the two cargo items).