You're correct. It must be a clacker. Wait. What the hell is a clacker?
Definitions of Clacker on the Web:
The term clackers refers to a vintage toy which was briefly popular in the early 1970s. Its name refers to the fact that its point was to have the two balls of which the toy consisted of clicking against each other. It was similar to the actual Argentine weapon known as bolas.
en.wikipedia.org/wiki/Clacker
A 19th centure device, often used in Europe, but in North America as well, that was used as a fire signal.
www.firefightingvideos.org/index.php
(Fishing) A metal device added to certain brand buzzbait in order to make additional noise.
www.basspro.com/webapp/wcs/stores/servlet/CFPage
A large insect-like creature found mainly in the Arena and the dungeon.
www.nationmaster.com/encyclopedia/PlaneShift-(game)
anus (apparently). On my favorite TV program, Harry's Practice, a dog sniffed Dr. Harry in the crotch from the front, and then quite up his arse, as it were, from the rear. Dr. Harry said the dog was "right up me clacker. ...
www.stensrude.com/Australia/Oz.html