Translation of crabby in German

Sometimes you forget one word and this makes the entire sentence sound differently. That means that you need to read each email before sending it twice at least if you want to be on the safe side every time.
I think that it is easy to find new students, as many of them have already visited schools in Switzerland or Germany, but most of them have been to Berlin. Spanish learning is less common these days.
I've tried to learn Spanish with this site and it worked well. Do you currently attend a course? I used to attend a language school, but for now I'm too busy. Incredible how fast one forgets the language.