Good Old Days is a quest consisting of just one long conversation, available exclusively to Pegasus ponies.
Starting
The quest can be initiated by talking to Grampa Biggles at the Cloudopolis flight school. Players of pegasi have the chance to tell him a story to lift his spirits; if they remain both polite and plausible throughout, he will provide a reward.
Reward
If the quest successfully completed, the reward is ten pieces of Rock Candy, worth one bit each, as well as 1000 XP.