noun. Man or woman, Democrat or Republican, animal or mineral: if it likes cheese, and it has a long tail, and it can't be trusted, and it's in the sewer, and it's in Congress, this is what you got.
Related terms: congresscritter, congressrat, congress-scum, congressweasel.
Real citation: "It would seem that things such as the CDA, etc, are patent violations of the Bill of Rights. As such, wouldn't the Congressrodent(s) proposing such measures be violating our civil rights, and thus be criminally liable? Aren't Congressrodents supposed to take an Oath of Office that involves upholding the Constitution?"
(Dave Merriman, July 13, 1995, Root Causes, cypherpunks.venona.com/date/1995/07/msg00233.html)
Made-up citation: "Congressrodents can be a serious problem for homeowners. The following information can help you identify, control, and eliminate them. Some of the techniques can be applied to the common city councilrodent as well."