|away with the faires||Someone who is away with the fairies is in such a dreamy state that they are not totally in touch with reality and give the impression of being slightly mad.|
It’s no use trying to explain the problem to her – she’s away with the fairies!
|go bananas||If someone becomes very emotional and starts behaving in a crazy way, they go bananas.|
If you announce that you are going to drop out of school, your parents will go bananas!
|basket case||A person whose agitated mental state leaves them helpless or unable to cope with things is called a basket case.|
Jenny will turn into a basket case if this stressful situation continues.
|bats in the belfry||If you say that somebody has bats in the belfry, you mean that|
they are eccentric or crazy.
He comes up with the craziest ideas – he must have bats in the belfry!
|have you gone out of your mind?||If you ask someone if they have gone out of their mind, you think they are crazy, foolish or insane.|
You’re going to ask for a 100% increase in salary? Have you gone out of your mind?
|the lights are on, but no one is home||This is a humorous way of referring to someone who is lacking intelligence or sanity, or to someone who is simply preoccupied and not paying attention.|
Forget about Andy today – the lights are on but no one is home!
|lose one’s marbles||If someone loses their marbles, they become mentally confused, or no longer behave sensibly or rationally.|
The old man is acting very strangely. He seems to have lost his marbles.
|not all there||Someone who is not all there behaves strangely at times, or seems a bit odd.|
Our new neighbour wears a hat and coat even in summer; he’s not all there!
|not in one’s right mind||Someone who is not in their right mind is not behaving in a logical or sensible way.|
Julie wasn’t in her right mind the day she bought that outfit. It doesn’t suit her at all!
|not playing with a full deck (of cards)||Someone who is not playing with a full deck (of cards) lacks intelligence or does not have full mental abilities.|
Old Mrs.Whitehead was not playing with a full deck when she bought that fancy lawnmower!
|go nuts||To say that a person has gone nuts means that they have become completely foolish, eccentric or mad.|
I think the old lady has gone nuts! It’s very hot today and she’s wearing a fur coat!
|off your rocker!||If you tell someone that they are off their rocker, you think they are completely crazy.|
You’re going to give all your money away? You’re off your rocker!
|rats in the attic||If you say that someone has rats in the attic, you mean that they are a bit mad or that their behaviour is eccentric.|
She keeps repeating the same question. I think she’s got rats in the attic.
|a screw loose||If someone has a screw loose, their behaviour is strange and they appear slightly mad.|
She wears a fur coat in the summer – she must have a screw loose!
|stark raving mad||To say that someone is stark raving mad means that they are completely crazy.|
You’re stark raving mad to go sailing in this weather.
|stir crazy||If a person goes stir-crazy, they become very agitated or nervous because they have been confined to a place for too long.|
After several days in quarantine, people were going stir-crazy.
|take leave of one’s senses||To say to someone ‘have you taken leave of your senses?’ means that you think their behaviour is crazy.|
You’re going skiing in this blizzard? Have you taken leave of your senses?