I'm fluent in English! (So what if it's my "Mother-tongue" )
But seriously, in the past I've studied French and Ukrainian for ~ 10 years. I don't retain any Ukrainian, but I have a very good understanding of Quebecer. (French-French is a different story.) I've been studying German for the last 3 years now and so far I haven't died living here in Vienna, so it must be decent.