This article will come in a series of steps. The first will cover a simple aspect of language, the second will cover a more complicated aspect.

First, when abroad, whenever you interact with someone, you must convince them you have absolutely no idea of their language; this may lead them to find an english speaking person you can talk to instead. This saves you actually having to bother learning.

Here is a guide of how to say "My Hovercraft is full of eels" in 51 languages, covering the majority of countries. This basically certifies that the foreigners in question will have no doubt that you do not speak their inferior language.

"My Hovercraft is full of eels"

Afrikaans = My skeertuig is vol palings
Albanian = Hoverkrafti im është plot me ngjala
Arabic (Modern Standard) = lugha wāhida lā takfī
Belarusian = Мой паветраны човен поўны вуграмі
Bengali = matro eki bhasha jôtheshṭo nôe
Bulgarian = Корабът ми на въздушна възглавница е пълен със змиорки
Cantonese = ngóh jek heijínsyùhn jòngmúhn saaisíhn
Chinese (Mandarin) = Wǒ de qìdiànchuán zhuāngmǎn le shànyú
Croatian = Moja je lebdjelica puna jegulja
Danish = Mit luftpudefartøj er fyldt med ål
Dutch = Mijn Hoeverkar zit vol palingen
Estonian = Mu hõljuk on angerjaid täis
Finnish = Ilmatyynyalukseni on täynnä ankeriaita
French = Mon aéroglisseur est plein d'anguilles
Georgian = erti ena arasodes araa sakmarisi
German = Mein Luftkissenfahrzeug ist voller Aale
Greek = μία γλώσσα δεν είναι ποτέ αρκετή
Hebrew = Harahefet sh'eli mele'ah betzlofahim
Hindi = merī ṃḍarāne vālī nāv sarpamīnoṁ se bharī hai
Hungarian = A légpárnás hajóm tele van angolnákkal
Icelandic = Svifnökkvinn minn er fullur af álum
Indonesian = Hovercraft saya penuh dengan belut
Irish (Gaelic) = Tá m'árthach foluaineach lán d'eascainn
Italian = Il mio hovercraft/aeroscivolante è pieno di anguille
Japanese = Watashi no hobākurafuto wa unagi de ippai desu.
Korean = Nae hoebuhkeurapeuteuneun changuhro kadeuk cha itseyo
Kurdish = Seyarey balindîyekem pir ye li marmasî
Latin = Mea navis aëricumbens anguillis abundat
Latvian = Mans gliseris ir pilns ar zušiem
Lithuanian = Mano amfibija su oro pagalve pilna ungurių
Luxembourgish = Mäi Loftkësseboot ass voller Éilen
Macedonian = Моето летачко возило е полно со јагули
Mandarin = yīzhǒng yǔyán yǒngyuǎn bùgòu
Mongolian = Tөрсөн өдрийн баяр хүргэе
Norwegian = Luftputefartøyet mitt er fullt av ål
Polish = Mój poduszkowiec jest pełen węgorzy
Romanian = Vehicolul meu pe pernă de aer e plin cu ţipari
Russian = Моё судно на воздушной подушке полно угрей
Scots = Goad a'michty! Ma dampt hoovercraft's breemin' ower wi bluiddy eyls!
Scottish Gaelic = Tha mo bhàta-foluaimein loma-làn easgannan
Serbian = Моја лебдилица је пуна јегуља
Slovenian = Moje vozilo na zračni blazini je polno jegulj
Spanish = Mi aerodeslizador está lleno de anguilas
Swedish = Min svävare är full med ålar
Taiwanese = gio ging-tsad
Thai = hō woe khrāp kong phom tem pai duay pla lhai
Turkish = Hoverkraftimin ici yılan balıǧı dolu
Ukrainian = Моє судно на повітряній подушці повно вуграми
Uzbek = Mening kayiqim baliq bilan to'lgan
Vietnamese = Tàu cánh ngầm của tôi đầy lươ
Welsh = Mae fy hofrenfad yn llawn o lyswennod

Part 2 coming soon, "Survival - How to say 'Please don't shoot me' in 51 different languages".