Chummydinger 

A chummydinger is a word used to describe a item when you cant remember the correct name of the item that you are thinking.

When a word is on the tip of your tongue but you cant remember it.

Can you pass me that chummydinger?

Whats that chummydinger you use when your ____ ?

Chummydinger by TrueNewfieLady October 13, 2009

chummyjigger 

A name for an object that you either do not know the name of or just plain forget

Can you pass me that chummyjigger by your foot?

chummyjigger by Jeffery Buckle September 22, 2007