Lithuanian, German, Hungarian, Polish, Russian, I believe a bit of Slovak. Keep in mind all of my ancestors were Jews as far as I can tell (Eastern European Jews are genetically similar, so some consider them an ethnicity), and I don't think any of my direct ancestors married non-Jews.
Don't lie; if you are really Litvish, Deutsich, Magyar, Polski, Roosker, then you could speak these tongues; if you can't, then you're not. If you just do it by roots, we're all Africans.