I suck pretty much.
I use English and Japanese daily and I consider myself quite fluent in these languages. There's still a lot of room for improvement, though.
German is my native language, so I should be good at that, but who knows? I'm never using German anymore, so I feel I'm losing it slowly.
I've also learned Spanish, French and Latin in school, but if you never use it you lose it, right?
P.S.: Living in Japan, having a job where you speak English all day, but being a native German speaker makes your head explode at times!
You have no idea how much I mix up those 3 languages sometimes!! It's crazy! (^__^') ...