Learn Russian!
Another one I've been wanting to learn! I keep meaning to teach myself the Cyrillic alphabet, but I always forget...
It's really easy if you do it in segments.
for a while i needed some cyrillic for my writing, just for a name, plus generic (fanatic) wikiing, and i picked up the phonetic meaning of all the letters, but since i didnt use them anymore, mooost of it went away again
like bart simpson unlearning spanish "aaand gone!"