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Guess the hidden image! Click REVEAL to show part of the image. Guess correctly, and earn 600 points. Incorrect guesses cost 50 points. Your first 3 reveals are free — extra reveals cost 15 points each. Good luck!

The English language is full of idioms, expressions that have organically become part of the language we speak. Translated literally, many of these phrases are nonsensical, but a master of English will know the meaning of all 35. How many can you complete?

Before the days of fuel efficiency ratings and airbags, there were muscle cars, the brawny spawn of Detroit car makers. How much do you remember about these muscular American classics?

French is the language of love and for a long time was the international language of business too. Test your basic French skills with this fantastique HowStuffWorks quiz!

Two World Wars. Two generations shattered by conflict. Sometimes, we confuse the details of these great wars. Read our clues and then decide -- was it World War I or World War II?

Guess the hidden image! Click REVEAL to show part of the image. Guess correctly, and earn 600 points. Incorrect guesses cost 50 points. Your first 3 reveals are free — extra reveals cost 15 points each. Good luck!

Some of the best movies ever produced fall in the drama category. It's easy to fall in love with the stories and characters from this genre. Find out if you can recognize the movie title with just seeing one screenshot by taking this quiz!

How well do you know the average American? What do they believe and how much do they make? Find out how much you have in common with the average American by taking this HowStuffWorks quiz!

Patronuses are animal representations of our happiest thoughts. They are meant to protect us, among other things. What do you think your true Patronus would be? Take this quiz to find out!

In its heyday, the Roman Empire was the mightiest the world had ever seen. It was ruled over by a variety of people with all sorts of different personalities. Which are you most like? Take this quiz and find out!

Remember: An invitation is never an obligation -- but once you accept, you better play by the rules. Take this Wedding Etiquette Quiz to remain respectful on the big day.

Engines come in way more varieties than just the type under the hood of your car. What do you know about different engines and how they work? See what you know by taking the quiz!

You see it (or maybe hear it) right there: It's on the Internet, and it's not right. You're sure of it. It beckons you, "Correct me! Point me out! Tell everyone how wrong I am, and how right you are!" But … should you, really?

Ford and Chevy are two of the most famous automobile manufacturers in history. Along the way, they've developed a fierce rivalry. Are the following facts about Chevy or Ford?

You may be a book lover, but can you guess these classics from a single sentence? See if you can read your way to a perfect score with this HowStuffWorks quiz!

Lots of things around us have misleading names. Peanuts, for instance, aren't nuts. And strawberries aren't actually berries. Even The Hundred Years' War lasted for 116 years. And when it comes to how we name animals, we don't always do the best job. See how many of these animal misnomers you can decipher.

Love it or hate it, we all have definitely eaten some fast food in our lives. Put your fast food knowledge to the ultimate delicious test with this oh so satisfying HowStuffWorks quiz!

Every generation creates its own unique slang words based on events and everyday life. See if you know all these WWII slang words by taking this quiz!

Ever since they supplanted horses as the cowboy's favorite method of transport, everyone loves a truck, and people have been singing about them all that time. Can we guess which song you've been singing along with?