wrong number mate!
If it ain't gibberish, then you've been dialling the wrong number matey, put the goggles on to see clearly that this ain't a literature, language, history or cultural forum.
If you wish to keep teaching, go back to the classroom!
PS: Thanks for making us all more knowledgeable on what 'black humour' means, i am certainly extremely grateful for people like you who like to share knowledge. Am sure the whole world has learnt a new phrase from the meister.