  We present two kinds of acoustic models for the massless electric charge
conceived by Einstein and Rosen in the form of a bridge (wormhole throat). It
is found that the first kind of modelling requires a thin layer of exotic
matter at the bridge. We also derive an acoustic equation that exclusively
characterizes the model. Using a second kind of model, it is demonstrated that
the Einstein-Rosen charge has a sonic Hawking-Unruh temperature proportional to
+-1/$beta$, where $beta$ is the size of the charge. This suggests that
(squealing!) wormholes can also be formally accommodated into Unruh's fluid
model.
