This article refers to events, personae and activities only present in-game during the annual Bristlebane Day celebration, which comes to Norrath each year on and around April 1st.
Right click on the NPC and choose 'Buy from Merchant' in order to purchase the list. As soon as you purchase it (it costs 10 silver), you are given the quest accept window.
Wait 2 hours and the quest will auto-complete.
You must be logged in for the 2 hour timer to count down. If you log out, the timer will pause and resume at the same point when you log back in.
The list of items in the quest helper is the joke. They don't exist in game so you will be unable to find them.
A chicken hoof
An octopus shell
A centipede tongue
A dark elf tail
A pig wing
A horse egg
A cow gill
A patch of snail fur
A cat shell
A fish hand
After two hours have passed you will receive your Band of Gigglegibbery in the mail.