# One corner short of a pentagon What does it mean?

1. Dec 8, 2012

### mishrashubham

"One corner short of a pentagon"....What does it mean?

Ok I read this phrase somewhere and I have no idea what it means. Apparently it's a North American thing and is something related to someone's personality or stuff like that.

Can anyone tell me what it is supposed to mean?
Thanks

2. Dec 8, 2012

### Jimmy Snyder

Re: "One corner short of a pentagon"....What does it mean?

There is something missing in that person's mentality.

3. Dec 8, 2012

### Staff: Mentor

Re: "One corner short of a pentagon"....What does it mean?

The person being described is a square :) You may not be old enough to get that joke...

I haven't heard that one. There are a lot of
Code (Text):
He is [fill in the blank] short of [fill in the blank]
ex: He is one card short of a full deck
sayings. They all are references to someone's lack of intelligence.

I guess this one is a more geometric approach.

4. Dec 8, 2012

### Staff: Mentor

Re: "One corner short of a pentagon"....What does it mean?

I have to admit I've never seen that phrase before, but a Google search turns up a lot of hits for it. Live and learn!

I do remember seeing another phrase with the same pattern "one ______ short of a ______", but I can't remember what it is! I guess I must be starting to fit that description. :uhh:

[added] Aha, now I remember it: "one brick short of a full load." Jim's version also rings a bell in the back of my head.

5. Dec 8, 2012

### Staff: Mentor

Re: "One corner short of a pentagon"....What does it mean?

Darn - Jimmy already posted. I expected to really roll with this whole thread....

6. Dec 8, 2012

### Staff: Mentor

Re: "One corner short of a pentagon"....What does it mean?

Let's make up one for physicists:

"One electron short of a full shell."

7. Dec 8, 2012

### Astronuc

Staff Emeritus
Re: "One corner short of a pentagon"....What does it mean?

A less than noble personality.

8. Dec 8, 2012

### Jimmy Snyder

Re: "One corner short of a pentagon"....What does it mean?

Sharp as a marble.

9. Dec 8, 2012

### mishrashubham

Re: "One corner short of a pentagon"....What does it mean?

Ah I see.... I guess it makes sense.

Knowing you though, I was at first not sure whether to take this as the real thing or yet another joke.

10. Dec 8, 2012

### Astronuc

Staff Emeritus
Re: "One corner short of a pentagon"....What does it mean?

or someone missing

11. Dec 8, 2012

### Staff: Mentor

Re: "One corner short of a pentagon"....What does it mean?

Yes, probably rather greedy.

12. Dec 8, 2012

### Astronuc

Staff Emeritus
Re: "One corner short of a pentagon"....What does it mean?

as halides tend to be with respect to electrons - fluoride being the worst offender.

13. Dec 8, 2012

### encorp

Re: "One corner short of a pentagon"....What does it mean?

"You're not the sharpest knife in the drawer!"

14. Dec 8, 2012

### micromass

Re: "One corner short of a pentagon"....What does it mean?

What about "One corner short of a circle"?

15. Dec 8, 2012

### KrisOhn

Re: "One corner short of a pentagon"....What does it mean?

I wish I could have that many corners...

16. Dec 8, 2012

### wuliheron

Re: "One corner short of a pentagon"....What does it mean?

So smart he's stupid.

17. Dec 8, 2012

### edward

Re: "One corner short of a pentagon"....What does it mean?

His elevator doesn't go all the way to the top floor.

One taco short of a combination plate.

Dumber than a bag of hammers.

All things my son has said about his boss.

18. Dec 8, 2012

### Staff: Mentor

Re: "One corner short of a pentagon"....What does it mean?

A sandwich short of a picnic.

Not the brightest bulb in the lamp.

Doesn't have both oars in the water.

He has a mind like an ink blotter, he soaks it all up, but gets it all backwards.

19. Dec 8, 2012

### Ibix

Re: "One corner short of a pentagon"....What does it mean?

One banana short of a bunch.

Behind the door when they gave out the brains.

Thick as two short planks.

Given that the original is supposed to be an American saying, is there extra resonance in "a pentagon" versus "the Pentagon"? Quotes about military intelligence being an oxymoron abound.

20. Dec 8, 2012

### edward

Re: "One corner short of a pentagon"....What does it mean?

A few fries short of a happy meal.

21. Dec 8, 2012

### Ben Niehoff

Re: "One corner short of a pentagon"....What does it mean?

These are even funnier when you mix them:

"Not the sharpest bulb in the box."

22. Dec 8, 2012

### Michael Redei

Re: "One corner short of a pentagon"....What does it mean?

Thick as a Happy Meal.
Not the sharpest knife in the brains.
Doesn't have two short planks in the water.

I think I'm going the wrong way; these are actually making some sense.

23. Dec 9, 2012

### collinsmark

Re: "One corner short of a pentagon"....What does it mean?

Some of the previous comments were quite humorous.

But seriously though, it must be said that in the American vernacular, the term "square" is not an insult to intelligence. Instead it means dull, conformist, overly conventional or out of touch with current trends.

(This post is square, for example.)

24. Dec 9, 2012

Re: "One corner short of a pentagon"....What does it mean?

Here's one I've heard a lot:

"One sandwich short of a picnic."

Here are a few I made up:

"One branch short of a hyperbola."
"One lambda short of a fundamental frequency."
"One surjective mapping short of a finite integral domain."

25. Dec 9, 2012

### Michael Redei

Re: "One corner short of a pentagon"....What does it mean?

One epsilon away from being negative.

(This is adapted from the shortest mathematical joke: $\mbox{Let }\varepsilon<0$.)