Welcome to Idiom 100, where we learn 100 commonly used idioms by native English speakers.

All of the explanations are in English, so it might be challenging for you,

but just try to imagine the meanings in your head and study hard and soon you'll be able to use these idioms in your conversations.

Is everyone ready? Let's begin.

Hello again! Today's idiom is: out cold.

Out cold.

Ummm... it's cold outside? No, that's not the meaning of this idiom.

Let's try to picture something in our head.

Um, maybe someone is sleeping, okay?

But are they sleeping?

I don't know. Let's touch them.

Oh, they're cold.

Yeah, they look dead.

Yeah, they're very cold and not moving, maybe they're dead?

They're out cold, okay?

So, let's listen to some examples as we think about this idiom.

Dad is out cold. I don't think we can go to the park today!

Well, why don't you let him sleep? He's probably really tired.

Alright, so Dad is sleeping. He's out cold. Hmmm, okay?

Let's listen to another example.

Why didn't you wake me up this morning? I was almost late for school!

I tried, but you were out cold!

Alright, so they were sleeping, she tried to wake him up, but she couldn't.

He was out cold.

So, did you guess it?

The meaning of 'out cold' means to be in a very deep sleep.

You can't be woken up, yeah.

You shove and you say 'wake up,' but nothing. They're out cold.

Such a deep sleep you might wonder, are they alive?

Are they okay?

I hope they're just sleeping.

Maybe you get nervous.

So, if someone is out cold, it means they're very deep in sleep, alright?

I wonder, are you out cold every night?

If you're working busy all day, maybe you hit the hay and you're out cold very fast.

I hope you're out cold tonight and I'll see you again next time.