A couple moved to the country after retirement. One mild winter, they had a bit of a problem with rodents in the garage. So they bought a sub-sonic mouse repellent, a plug-in type that emits some kind of sound that drives off mice. The husband was showing it to their neighbor and explaining that it was an animal repellent. He told her that it worked on everything from mice to elephants.

"Really!?" she said. "Mice to elephants, eh?" sounding a bit skeptical.

"Yes," he replied, seriously. "We've had it here for a couple of weeks now, and we haven't had a single elephant in the garage the whole time!"