Wooznoop

It's sort of like the famous phrase "Whatchamacallit" or also the candy bar by Hershey's, but it's not, because the listener and the user knows what they're talking about. Yet in a sense, it's used in the same fashion as the phrase "Whatchamacallit".

Pass the wooznoop! (Blunt)
Get me a wooznoop from the store. (Soda, lighter etc.)