Yeah, I thought it was pretty funny too. I even know enough German to understand what they were saying in German too.
German:
Lady: I speak a little bit if German, do you speak German?
Man on bike: German? No. (to the other man) Do you speak German?
Other man: German? I speak a word or two, but I'm not fluent.
When the second man says "maybe we'll have learned some English next time you're here" the man on the bike say "or maybe some German".