Do programming languages count? I was speaking in ARM assembly for 5 months 
I hope so. Otherwise, this list is fairly short.
English. That's it. I can still remember some of my Latin and Ancient Greek, and I have a few words in French, Irish, German, Japanese, Greek, Setswana, probably a few words in Xhosa, and maybe two or so words in Afrikaans and Russian. But I'm only fully fluent in English.
Computer languages: 1337, some hacker jargon, Java, C, C++, m68k, some Python, some C#, bash-script, and ASCII (with a charmap) in both binary and hex.