A Funny Thing Happened is a game designed to fill in the blanks in journeys. To detail the intereactions and minor foibles that whilst not central to an epic plot can still occur on any journey.
It is also intended to be playable whilst on a journey. Players take it in turns to describe the story with a dice based bidding mechanism to control conflict resolution.
You can play A Funny Thing Happened as a stand alone game or as a filler for your ongoing campaign to explain what acutally happened in the 2 week long trip that your GM glossed over in a sentence.