42378
Recently, I found a [joke about CPU Cores/Threads
here](https://twitter.com/P5QPRO/status/818421589930745859). I catch attention
on the word "あたまおかしい" which in this context is probably:

> It is **crazily/insanely** fast.

Right? But I have seen many use of "Okashii" alone that means "weird". So many
questions regarding this phase follow:

  1. Can "あたまおかしい" in the above article, in any way, can it be translated to **too fast that head is dizzy/weird**? Instead of "mentally" craziness.

  2. Are "頭おかしい" and "頭がおかしい" have the same meaning and usage?

  3. I wonder if this phase can describe dizziness in your head. Like, you say this to your friend when your head feels weird or dizzy? "ああ、頭がおかしくなる。"

![](https://pbs.twimg.com/media/C1ud9TmUkAQ6aox.jpg)
CC BY-SA 3.0
2017-01-09T15:14:44.563
42373
2017-01-09T18:55:17.763
2017-01-09T17:22:30.020
5010
19345
question
meaning slang internet-slang
Using of あたまおかしい in various situation and translation
> can it be translated to too fast that head is dizzy/weird? Instead of
> "mentally" craziness.

No, あたまおかしい means _crazy/insane/mad_ , not _dizzy_. Its basic meaning is of
course negative, but recently あたまおかしい has gained a positive sense, as seen in
this picture. You can say あたまおかしい is mostly positive when this word is used
for comedians, "crazy" YouTube video, etc.

おかしい just means _weird/strange/peculiar_ as well as _funny_. If it were not
for あたま in this picture, it would not make much sense.

> Are "頭おかしい" and "頭がおかしい" have the same meaning and usage?

As net slang, あたまおかしい is used almost like a single i-adjective. あたまがおかしい might
mean the same thing depending on the context, but I rarely see it. Since
あたまがおかしい is not an established slang term, I think it tends to be used in the
original (i.e., negative) sense.

あたまおかしい is still net slang, especially when this means something positive. A
safer replacement would be
[ヤバい](http://jisho.org/word/%E3%82%84%E3%81%B0%E3%81%84), which is a widely
known slang term that can also be both positive and negative.

People often add `(ほめ言葉)` to clarify it has a positive connotation. e.g,
"narutoさん頭おかしい（ほめ言葉）"

> I wonder if this phase can describe dizziness in your head. Like, you say
> this to your friend when your head feels weird or dizzy? "ああ、頭がおかしくなる。"

You should say
頭が[くらくら](http://jisho.org/word/%E3%81%8F%E3%82%89%E3%81%8F%E3%82%89)する or
頭がぐらぐらする to express dizziness. 頭がおかしくなる usually means "I'm going mad".
CC BY-SA 3.0
2017-01-09T17:21:12.377
42378
2017-01-09T18:22:34.893
2017-01-09T18:22:34.893
5010
5010
42373
answer
Just to add, the translation of your pic wouldn't be "Insanely/Crazily fast",
but literally just "Insane/Crazy". I think it's worth making the distinction
that this (slang) usage of "insane/crazy" does not coincide with the usage in
the English (slang) language.

In English, when someone says, "That's crazy/insane!" (of course, depending on
the context and tone) it would mean pretty much the same as "That's awesome!".

When used in this context, 頭(が)おかしい would have the tone of "ridiculous"
or"whoever is going this far has to be stupid/out of his mind". So as you can
see, it is not really praising the target, though in turn it does in a
roundabout way. Think of it as needing one extra step to become praise.

> That's crazy! → That's cool! (direct praise)  
>  頭おかしい！ → He's out of his mind for doing that! → It's so ridiculous, it's
> cool! (indirect praise)

Also note that this type of praise is only really used in extreme situations,
like the example you gave.

> A: "My friend painted this really good picture."  
>  ○B: "That's crazy!"  
>  ×B: 頭おかしいわ（褒め言葉）

Notice that even with the connotation note, it's not extraordinary enough and
most likely other people would reply with "What's so crazy about it?". Compare
that to the English usage, which is generally acceptable.

> A: "My friend painted this really good picture using only his mouth to hold
> the brush!"  
>  ○B: "That's crazy!"  
>  ○B: 頭おかしいわ（褒め言葉）

Basically, it's best to use in situations you feel would be overkill.
CC BY-SA 3.0
2017-01-09T18:55:17.763
42384
2017-01-09T18:55:17.763
9508
42373
answer