I have shared this before, but I will do it again.
One of the best scenes I have ever witnessed was at a visit to the Los Angeles Zoo.
A group of teenage boys were taunting the gorillas. There is a huge silverback there - and he just sat watching them with those great all-knowing eyes that they have.
Then he suddenly reached behind him - gathered in his hand a fresh "batch" and flung it at the boys - scattering it all over them.
It all happened so quickly and they were totally caught unawares.
I just loved it.