Cost an arm and a leg.

Where did this gruesome image come from? Nobody knows for sure! That’s part of its fun mystery. One popular theory links it to ancient times. Soldiers might have been paid in body parts. Or, perhaps it’s from artists’ struggles. They might have sold limbs for paint. Another idea is from portrait painting. Rich clients paid extra for their full body. They wanted their arms and legs shown. So, artists literally got paid for painting limbs. It’s a bit gruesome, but memorable! It’s like saying a designer handbag costs your firstborn child. You don’t *actually* give them up, but wow, it’s expensive!

Use this when you’re surprised by a high price. It’s a great way to express shock. You can use it in conversations with friends. It’s also good for texting or social media. Just make sure the context is about cost. You wouldn't say your homework costs an arm and a leg. That would be silly! Unless your teacher charges by the page? Haha, just kidding!

• "That new gaming console? It costs an arm and a leg!"
• "I wanted that designer dress, but it cost an arm and a leg."
• "Flying first class to Hawaii really cost an arm and a leg."
• "My friend’s wedding was beautiful, but the venue alone must have cost an arm and a leg."
• "Trying to get tickets for that concert was tough. They were charging an arm and a leg."

Use this for things that are genuinely expensive. Think luxury items. Or unexpected, high bills. A new car, a fancy vacation, or major home repairs. It’s perfect for expressing sticker shock. It adds a bit of drama to the conversation. It’s like adding a dramatic filter to your sentence. You want to emphasize the high cost. It’s a fun way to complain about prices. Just don't overdo it, or it loses its punch!

Avoid using it for everyday, cheap items. Saying your coffee costs an arm and a leg is weird. Unless it’s solid gold coffee? Even then, maybe too much. It’s also not for things that are just slightly expensive. If something is only a little pricey, use other words. Don’t use it for non-monetary costs. Your boss yelling at you doesn't cost an arm and a leg. That’s just a bad Tuesday!

A common mistake is using it for non-financial costs. Another is using it for things that aren’t *that* expensive. You might also misuse it by making it too literal. Remember, it’s an idiom! It’s figurative language, not a shopping list for body parts.

• ✗ "My workout routine costs an arm and a leg."

→ ✓ "My workout routine is really intense."

• ✗ "This difficult math problem cost me an arm and a leg."

→ ✓ "This difficult math problem was really hard to solve."

There are many ways to say something is expensive. Some are more formal, some more casual. We’ll look at a few later. But cost an arm and a leg is very common. It’s colorful and memorable. It’s like the celebrity of expensive phrases!