If you think you can get away with that, you're as crazy as a loon.Poor old John is crazy as a loon.

Poor old John is as mad as a hatter.All these screaming children are driving me mad as a hatter.

Whenever John goes to a party, he gets as nutty as a fruitcake.Sally has been acting as nutty as a fruitcake lately.

The mayor cracked up after only a year in office.I was afraid the mayor would crack up because of too much work.

He's so strange that he actually drove his wife crazy.Doctor, there are little green people following me around trying to drive me mad.

Mr. Franklin drove his wife up the wall.All my problems will drive me up the wall someday.

If I don't get some rest, I'll go round the bend.Poor Bob. He has been having trouble for a long time. He finally went around the bend.

Whenever I see Sally, I just go bananas! She's fantastic.This was a horrible day! I almost went bananas.

If I stay around this house much longer, I'm going to go stir-crazy.John left school. He said he was going stir-crazy.

John is such a clown. He acts as if he has a screw loose.What's the matter with you? Do you have a screw loose or something?

Poor old Tom has bats in his belfry.Don't act so silly, John. People will think you have bats in your belfry.

John is a real nut. He has rocks in his head.I don't have rocks in my head—I'm just different.

What a silly thing to say! Have you lost your marbles?I can't seem to remember anything. I think I'm losing my mind.

Sometimes I think you're not all there.Be nice to Sally. She's not all there.

John acts as if he doesn't have all his marbles.I'm afraid that I don't have all my marbles all the time.

Sometimes, Bob, I think you're off your rocker.Good grief, John. you're off your nut.About this time of the day I go off my trolley. I get so tired.

Sally is a lot of fun, but she's sort of out in left field.What a strange idea. It's really out in left field.

Why did you do that? You must be out of your mind!Good grief, Tom! You have to be out of your head!She's acting as if she were out of her senses.

Why do you always act as if you're out of whack?I'm not out of whack. I'm eccentric.

I was so upset that I nearly popped my cork.They put him away because he popped his cork.

I don't know what happened to me. Suddenly I psyched out and started yelling.Max nearly psyched out when he saw the bill.

When she heard about what happened at the office, she went stark raving mad.You must be stark raving mad if you think I would trust you with my car!

What are you doing? Have you taken leave of your senses?What a terrible situation! It's enough to make one take leave of one's senses.

Sometimes Bob acts like he's touched in the head.In fact, I thought he was touched.

I think I'm going around the bend.She sounds like she's round the bend already.

You are totally balmy if you think I will put up with that stuff.What a balmy idea!

You're bats!You are driving me batty!

She acts a little birdy from time to time.Would you kindly take your birdie friends and go?

Get this bonkers brother of yours out of here!I think I am going crackers.

You are completely bonzo!I want out of this bonzo place!

He was home for only three days; then he began to climb the wall.I was climbing the walls to get back to work.

Who came up with this cockeyed idea, anyway?If you didn't act so cockeyed all the time, you'd have more friends.

The chick is just coo-coo, that's all.How did I ever get involved in this cuckoo scheme, anyway?

You're cracked if you think I'll agree to that.You gotta be cracked if you think I'm going back in there.

We need a crackpot idea around here just so we'll have something to compare your ideas to.Why not start a crackpot idea contest?

That friend of yours sure does act dingy sometimes.Tell the dingy drip to forget it.I'm not dingy, I'm just in love.

Who is that dippy chick with the lamp shade on her head?Tom is dippy, but fun.

This tax stuff is about to drive me around the bend.Gert tried to drive us all around the bend.

This cold is driving me bonkers.These tax forms are driving me nuts.

Wow, that chick is far gone. Listen to her rave.He was too far gone to make any sense.

Wow, I've got so much to do, I may just flip.The guy flipped. He was the nervous type.

Tom nearly flipped his wig.I flipped my wig when I got the news.

I think they ought to send you to the funny-farm.He's too far gone for the funny-farm.

Sometimes you are so gaga!Sally is just naturally gaga.

Sorry, I just went bananas for a minute.I thought he was going to go bananas.

I thought for a minute that Pete was going to go haywire.Sorry, I guess I just went haywire for a minute.

Don't go mental, Jane. Just calm down and think about it.Another day in that history class and I know I will go mental.

The guy is totally gonzo!Who drew this gonzo picture of me?

What a day! I almost went zonkers.I went a little zonkers there for a minute.

She is acting about half a bubble off plumb. What is wrong with her?Tom is just half a bubble off plumb, but he is all heart.

He's sort of strange. I think he's got a loose screw.Yes, he has a screw loose somewhere.

You must really have bats in your belfry if you think I'll put up with that kind of stuff.Pay no attention to her. She has bats in her belfry.

You have rocks in your head!She's got rocks in her head if she thinks that.

Who is that loco kid jumping up and down in the front seat?This zit is gonna drive me loco.

That is a loony idea. Forget it.I'm not really as loony as I seem.

Have you lost all your marbles?She acts like she lost her marbles.

What a meshuga day!This guy is meshugah!

She is strictly non compos!Don't pay any attention to her. She's non compos.

Tom's not all there. Really dense.You can't depend on Paul for much help. He's really not all there.

That guy's not playing with a full deck.Look sharp, you dummies! Pretend you are playing with a full deck.

You're nuts if you think I care.That whole idea is just nuts!

The whole idea is as nutty as a fruitcake.Tom is as nutty as a fruitcake. They will put him in a nuttery someday.

I've got to have a vacation soon, or I'm going to nut up.Poor Sue nutted up and had to take it easy for a few months.

You silly clown. You're off your chump.Am I off my chump, or did that car suddenly disappear?

Shut up! You're off your nut!Don't pay any attention to her. She's off her nut.

That silly dame is off her rocker.You're off your rocker if you think I believe that!

Don't mind Uncle Charles. He's a bit off his trolley.That silly old man is just off his trolley.

You're plumb loco if you think I'll go along with that.All those people were running around like they were plumb loco.

She is acting a little potty.Who is that potty old man?He got more potty as he grew older.

That gal is sort of schizo, isn't she?I have never dealt with such a schizo type before.

I've never heard such a screwy idea.It's really screwy.That's the screwiest-looking hat I've ever seen.

I was afraid I would slip my trolley.He slipped his trolley and went totally bonkers.

Suddenly Rocko snapped and began beating her savagely.His mind snapped, and he's never been right since.

Who wrote this squirrely play?Good old squirrely Tom! Isn't he a wonder?No, he's just squirrely.

I was totally weirded out and couldn't control myself.After the blowup, Fred was really weirded out.

The day was just gross. I thought I would weird out at noon.I weirded out at the news of Frankie's death.

Greg acts whacked all the time.Garth seems whacked, but he's just putting on.

The kid is just too wigged to do anything these days.After the bad news, she was totally wigged out.

I was afraid I would wig out if I stayed any longer.Take it easy, man. Don't wig out.