Is there a QI board anywhere?
If not, how about starting one?
We could post things that have always baffled us and someone else, someone brighter than a person who allows chocolates to go missing, can post possible answers.
For example, why is it that the bevelled bit of my bathroom mirror never gets steamed up, when the main part of the glass is complete fog??? EVERY morning that gets me. EVERY morning. I'd like to be able to look at the fog tomorrow and smile at the clear bevelled bit and say, "Ahhh... I KNOW why you're not doing that!"