This Article contains quest spoiling information, read it at your own risk!
In mission 3 of What a foolish Quest you will have to get a box filled with pies from Edron to Thais. When sending this box with a Parcel it will be infested with parcel bugs. At first it looks nothing has happened, the box will not look any different, but when you deliver the box to Bozo he will say:
Bozo: Eeeek! What have you done?? These pies are crawling with bugs! Those must be the infamous parcel bugs! Get some new pies at once you wannabe fool, and this time without any bugs!
Parcel Bugs are not creatures you can really see in tibia but only part of the story in this quest. They are mentioned in this newsbit on tibia.com in a humorous way.