Kein ahung. I'm English and I don't understand enough German to get this 😢
"Was ist rund," - What is round, "im Wald" - in the forest(?)
That's all I know right now, sadly.
I know "schreib" has something to do with writing?
Google translate translates the joke, but I'm assuming there's also wordplay involved because I still don't understand 😭
Still, I'm in Berlin in two weeks - I think I'll try my luck going to a comedy show anyway!