How to call people "stupid" gracefully

There must be cheating classmates or pig teammates in life. Sometimes they are stupid enough to really use "pigs" to describe them, and pigs will not agree. So many people just say "dumb" and "stupid" directly in English, but this is too direct, and the boat of friendship is easy to be overturned. Today I will tell you something other than "stupid" to describe your stupidity.

1. Use your loan-use your head.

When you say this idiom to others, you mean to use a slightly angry tone to make others think more.

As long as you use your head, I will become a useful child.

As long as you put your heart into it, you will become a useful young man.

You didn't even turn on the switch. Come on, Jamie, use your bread!

You didn't even look at the switch. Jesus, Jamie, grow up!

The light is on, but no one is at home.

Light is light, opening is opening, opening, nobody is nobody, and home is at home; The light is on but no one is at home, which means that the light is on at home, but you are not at home, which means that you are absent-minded

She really doesn't know-the light is on, but no one is at home!

She has no idea-her brain is as stupid as a pig.

Because the light is on but no one is at home, she can't understand what the teacher is saying.

Because she is absent-minded, she doesn't know what the teacher is saying.

3. clumsy

Thumb: Thumb. If a person has ten thumbs and can't even hold things steadily, how can he work?

Dick is not very good at using tools at home. He's all thumbs: when he nailed a nail, he probably hit his finger. When this happens, you will be shocked to hear his swearing!

Dick is not good at working with tools at home. He is always all thumbs. When he wants to knock a nail, he often knocks his finger. It really surprised you that he swore when he cut himself.

When it comes to his girlfriend, he is all thumbs. He just can't do anything right

As soon as he meets his girlfriend, he is all thumbs and can't do anything well.

4. Not the brightest light bulb in the box/tree/chandelier. He/she is not the cleverest.

Literally, it is not the brightest light bulb in the box/Christmas tree/chandelier. In fact, the inner meaning is that you are stupid.

He is not the cleverest man, is he?

He is really not very clever, is he?

5. Bean brain has no brain

The brain is as small as a bean. Can you use it? Answer: Nothing.

I can't imagine that Bill is such a fool. He brought his camera, but he forgot to bring his film.

I can't imagine Bill being so brainless. He brought a camera, but he forgot to bring film.

I have never met such a stupid person as you.

I have never seen a more stupid fool than you.