Japanese! Though for some reason I can still read it and remember some basic grammar, I cannot for the life of me remember any words, even after spending countless hours studying them.
Tell you what, your English is very good. Kudos on that my friendAndyFromMonday said:English and German. I learned English almost to perfection but barely due to school. It was mostly a combination of taking private lessons for about a year and using the computer. I didn't dislike german, but as soon as puberty kicked in I was more concerned with being the cool kid rather than give a fuck about learning. Even though I had quite good grades in my first 2 years and learned to converse in german (I was the best goddamn german speaker in that class) it all went downhill as soon as 7th grade hit.