According to a recent post by Fez (#226 in that thread), this relates to something he does every fortnight when in England, but much more in Morocco.
Wikipedia is a better source for the information than some websites which are confusing first and last names. My reference is to last names.
I thought... who he?! And then realised that I knew of his three major works! Not read them, but I'm familiar with the stage and film adaptations.