This achievement if for completing a side quest. The Quest can be found in Loegres in the first area at the first left in the city square section. Once take on you will notice it when you bring up the mini map below the main quest. It is available upon your return to Loegres
It is pretty easy and straightforward. You are going to go to specific locations marked on the map. You can see them by clicking on the quest when displaying the mini map. Simply go to each place, select the ! and it will play a cut scene of Magilou trying a comedy routine with each character.
The locations of the Comedy skits are:
1) Port Zekson
2) Tavern in Hellewas - available once you arrive looking for the Therion
3) Yseult - In the Tavern - available when you are able to return
4) Taliesin - by the Fountain
5) Stonebury - Man by the stump
Once complete go back to Loegres and speak with the old man in the same area the quest was started. The final part of the mission will be saving the Dancer from Daemons in a cave called Zamahl Grotto. This area isnt accessible until the final dungeon is available. Daemon and the quest is complete.