Dear parents of Luzira,
Via this post I would like to sincerely apologize. Last week, being very naive, I showed four children how, by placing a leaf between two fingers, a whistle can be created. I should have known better. The next day that idea had spread. I apologize for all the children that do now keep you awake at night.
Check the guy with his arms folded. Brilliant.
Again, I'm sorry.