Italienisch ist meine Antwort.
Islaendisch ist nicht hier, und ich weiss einigekann ein bisschen Deustch.
Sorry for coming off as the ultimate asshole, but you need to use "können" instead of "wissen" with languages, and you can use "einige" only with countable nouns. An uncountable adjective like "deutsch" needs something like "ein bisschen" or "ein wenig".
As for me, I'm pretty torn between French and Mandarin, as for "major languages". My ultimate dream language however is, just as for the poster I quoted, Icelandic. I'll be going there in summer, so maybe I can pile myself up with some resources and hear some of the flow of it. I sadly know no more than "góðan daginn" (good day) or "talar þú ensku?" (do you speak English), which hopefully should be enough to get me around
You proved my point precisely.
Also, since you helped me: "talar þú þysku?" (or saensku, dansku) might be useful in case English doesn't work, "ég tala" just to clarify what you can speak, "takk" as a shorthand for thanks, and "sjáumst" seems to be the bis bald.