I remember one time in school, I was just thinking about that weekend and all of sudden I thought, "このクラスは 心気臭いなんです。"
It freaked me out, but occasionally I'll think or talk in Japanese without translating it.
lol So naturally, then? =P That might be a bit troublesome for me...in order to graduate, I have to learn two years of a foreign language, and my stupid school only has German, French, and Spanish. So I chose Spanish, and at least five times everyday, when the teacher asks a question, I find myself thinking of the word in Japanese instead. XD For example, my teacher was reviewing and asks what the word in Spanish was for 'ten' and I'm like,"Ju....-.- Duh. Hm...wait..." Did it again with the word 'what'. But oh well, as long as I pass the class. =P