Something you can shout if you're overrun with rodents (and you feel "rats!" would be too unoriginal).*
* No need to be too concerned with originality** when dealing with rats, as they are the original plague-arisers.
One rat sees another rat spreading disease, then goes and spreads the same disease.
** Appropriately, the idea for this post came from the brain of a friend, not my own.
*** A copycat is actually the best way to get rid of plagiarizing rats.