There are some things that every traveller (or hitchhiker) should know. For example, what would you do in a foreign country if someone put an axe in your head? You'd need to know how to communicate this fact to the local people so they could help. So, for the betterment of all those on Everything2, I present a list of the phrase "Oh my God! There's an axe in my head!" translated into various languages.
Afrikaans:             O God!  Daar's 'n byl in my kop!
Alsatian:              Lever Gott! Es esch a Axe en miner Kopf!
Ancient Greek:         O Theos mou! Echo ten labrida en te mou kephale!
Assyrian:              iliya pashum ina reshimi bashu
Babylonian:            iliya pashu ina reshiya bashu
Bengali:               Oh Allah! Amar mathar upor bash poreche.
Bosnian:               boje moj! sjekira mi je u glavi.
Danish:                Åh min Gud! Der er en økse i mit hovede.
Dutch:                 O, mijn God! Er zit een bijl in mijn hoofd.
English:               Oh my god! There's an axe in my head.
Esperanto:             Mia Dio!  Hakilo estas en mia kapo!
French:                Mon dieu! Il y a une hache dans ma tête.
Finnish:               Voi Luoja! Paassani on kirves!
German:                Oh mein Gott! Ich habe eine Axt im Kopf!
Greek:                 hristo mou!  eho ena tscecouri sto kefali mou!
Hebrew:                Eloi!  Yesh'li ca-sheel ba-rosh sheh-li!
Hindi:                 Hay Bhagwaan!  Mere sar mein kulhaadi hain.
Hungarian:             Jaj Istenem, de fejsze van a fejemben!!
Icelandic:             Gud minn godur!  Thad er o:xi i ho:fdinu a mer.
Irish:                 Mo Dhia!  Ta' tua sa mo cheann.
Italian:               Dio mio!  C'è un' ascia nella mia testa!
Japanese:              aa, kamisama! (watashi no) atama ni ono ga arimasu.  
     Note: The "watashi no" wouldn't usually be said explicitly.  --SB
Klingon:               ghay'cha'! nachwIjDaq betleH tu'lu'!
Latin:                 Deus Meus! Securis in capite meo est.
Malay:                 Alamak! Terdapat kapak dalam kepala saya!
Malayalam:             Entey Deiwame, entey thalayil oru kodali undei.
Mandarin Chinese:      laotian a!  Wo de tou li you yi ge fuzi a!
Maori:                 Ave Te Ariki! He toki ki roto taku mahuna!
Marathi:               Aray Devaa!  Majhyaa dokyaat kurhaad aahay.
Middle Egyptian:       in Amun! iw minb m tp-i!
Norwegian:             Herre Gud! Jeg har en xks i hodet!
Polish:                O Moj Boze! Mam siekiere w glowie!
Portuguese:            Meu Deus! Tenho um machado na cabeça!
Romanian:              Dumnezeule, am un topor în creier!
Russian:               Bozhe moi!  Eto topor v moyei golove!
Slovenian:             Moj Bog! Sekiro imam v glavi.
Spanish:               !Dios mio!  !Hay una hacha en mi cabeza!
Swahili:               Siyo! (Huko) Shoka yangu kichwanil!
Swedish:               Åh, Herregud! Jag har en yxa i huvudet!
Tagalog:               Ay Dios ko! May palakol sa ulo ko!
Visigothic:            Meina guth, Ikgastaldan aqizi-wunds meina haubida
Welsh:                 A nuw!  Mae bywell yn fy mhen i!
...And now you can feel safe in the knowledge that if someone does indeed put an axe in your head, you will be able to alert others to your condition, even if you're vacationing on the Klingon homeworld.

Malay translation graciously provided by alex.tan and added on 2000/05/26; he's also the one who suggested I alphabetize the list.
2000/05/27: Mandarin Chinese translation provided by SabreCat.
2001/06/02: Swedish spelling corrected (thanks, achtung man!)
2002/01/23: Romanian translation from Jetifi.
2003/05/22: Space Butler returns to E2! Several corrections made, as well:
     Japanese: Romaji correction and the point about 'watashi no' being usually implied in Japanese, rather than actually said (thanks, cjeris!).
     French, Italian, and Portuguese: spellings corrected to use the proper character accents (thanks, Albert Herring!).
     Danish: spelling and characters corrected (thanks, liveforever!)
     Greek: The correct word for 'axe' is now used -- the old word actually meant 'knife' (thanks, Turbo Lynx!).