I’ve always really liked cliches, idioms, proverbs, and common phrases we like to use over and over. They can get repetitive at times, but they’re crucial tools in communication. They allow us to convey so much meaning in so few words, a commonly understood shorthand that can get complex points across quickly.

The only problem is that many of the most popular idioms in common use date back hundreds of years. In that time, they’ve either become outdated or seen their words adopt new meanings. In some cases the idioms have been shortened or reversed, losing important context. So when someone tells you to “bite the bullet,” you may inherently know what they mean, but if you really stop and think about it, you have no idea why it means what it means.

If you’re a word nerd like me, you’ll be absolutely fascinated by the origin and evolution of some of these common idioms, and how they came to mean what they mean today.

Animal idioms that make no sense

1. Sick as a dog / Working like a dog

Ever have a cold and tell someone you’re “sicker than a dog?” Kind of rude to dogs, in my opinion, and a little strange. I’ve had dogs my whole life and can’t remember any of them coming down with the flu.

Sick as a dog actually originates hundreds of years ago, if not longer. Some explanations say that in the 1700s, stray dogs were responsible for the spread of many diseases, along with rats and other gutter critters. There are also references as far back as the Bible to dogs eating their own vomit. Sounds pretty sick to me.

What about working like a dog? Dogs are the laziest creatures around! For this one you have to remember that dogs as “pleasure pets” is a relatively recent phenomenon. Before that they had to earn their keep by working tirelessly on the farm to herd and protect the animals.

2. Sweating like a pig

This is an extremely common idiom that we all use and accept. There’s just one problem with it: Pigs don’t sweat!

So…what gives? You might be surprised to hear that ‘sweating like a pig’ actually has nothing to do with farm animals.

According to McGill University: “The term is actually derived from the iron smelting process in which hot iron poured on sand cools and solidifies with the pieces resembling a sow and piglets. Hence ‘pig iron.’ As the iron cools, the surrounding air reaches its dew point, and beads of moisture form on the surface of the ‘pigs.’ Thus, ‘sweating like a........

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