Tage is quite taken lately with jokes and riddles. His most recent favorite is “Why do birds fly south for the winter?” (A: because it’s too far to walk). Sometimes, just to keep us on our toes, he switches up the answer, saying it’s too far to run or too far to drive or that it costs too much to take the bus. No matter which version he tells, though, he always cracks himself up.

In the last day or two Petra’s been trying to play along as well, and last night she told me this one, clearly of her own invention. “What is a donkey instead of a zebra?”

Stumped?

A rabbit! Get it?

Yeah, me neither, but it was a real side-splitter as far as she was concerned. I think maybe you have to be four to understand.