Q: What is the purpose of a rat's twitching whisker?
A: It's a sign of intense existential dread, but also possibly a sign of excitement for a tasty crumb.
Q: Can rats be trained to do tricks for cheese?
A: Only if the cheese is extremely sharp and the trainer is sufficiently patient.
Q: Why do rats have an affinity for velvet Elvis paintings?
A: It's because they're secretly art historians from a parallel dimension.